Library of Congress Subject Headings: Preservation Descriptors

Erich Kesse
    Absorbent paper
       =========================================================
       BT  Paper
       NOTE:  Subdivided as the term "Paper".
       =========================================================

    Acetal resins
       =========================================================
       BT  Gums and resins, Synthetic
           Polymers and polymerization
       RT  Plastics
       =========================================================

    Acetate film USE Safety film

    Acetates

    Acids
       =========================================================
       NT  Neutralization (Chemistry)
       =========================================================

    Acrylic resins
       =========================================================
       BT  Artists' materials
           Gums and resins, Synthetic
       =========================================================

    Adhesives
       =========================================================
       NT  Adhesives, Hot melt
           Glue
           Paste
       =========================================================
              -- Deterioration
              -- Solubility

    Adhesives, Hot melt
       =========================================================
       BT  Adhesives
           Thermoplastics
       =========================================================
              -- Deterioration
              -- Solubility
              -- Pollution
                      -- Measurement
              -- Pollution, Indoor USE Indoor air pollution
              -- Purification
              ==================================================
              RT  Air conditioning
                  Air filters
                  Disinfection and disinfectants
              ==================================================
                    -- Equipment and supplies

    Air conditioning
       =========================================================
       NT  Archives -- Air conditioning
           Humidity -- Control
           Libraries -- Air conditioning
       RT  Air -- Purification
           Dampness in buildings
       =========================================================

    Air pollution control industry
       =========================================================
       NOTE:  This term is usually used to express the control
              of outside air.  "Indoor air pollution" is more
              specific to preservation of archival and library
              materials.
       =========================================================

    Air filters
       =========================================================
       BT  Dust -- Prevention
           Filters and filtration
       RT  Air -- Purification
       =========================================================

    Air, Moisture of USE Humidity

    Air quality management
       =========================================================
       NOTE:  This term is usually used to express the quality
              and control of outside air.  "Indoor air
              pollution" is more specific to preservation of
              archival and library materials.
       =========================================================

    Albumen paper -- Conservation and restoration
       =========================================================
       BT  Photography -- Printing papers -- Conservation and
              restoration
       =========================================================

    Aluminum phosphide
       =========================================================
       BT  Pesticides
       =========================================================

    Ambrotype -- Conservation and restoration
       =========================================================
       RT  Photographs -- Conservation and restoration
       =========================================================

    Aniline printing USE Flexography

    Anobiidae
       =========================================================
       BT  Beetles
           Insect pests
       NT  Anobium
           Lasioderma
           Xestobium
       =========================================================
              -- Control

    Anobium
       =========================================================
       BT  Anobiidae
           Insect pests
       =========================================================
              -- Control

    Anobium tessellatum USE Xestobium rufovillosum

    Antibacterial agents
       =========================================================
       NT Bactericides
       =========================================================

    Application of pesticides USE Pesticides -- Application

    Architecture
              -- Design and plans -- Conservation and restoration
              -- Presentation drawings -- Conservation and
                    restoration
              -- Working drawings -- Conservation and restoration
              -- Sketch-books -- Conservation and restoration

    Archival material in machine-readable form  USE  Documents in
    machine-readable form

    Archival materials
       =========================================================
       BT  Archives
       RT  Manuscripts
       NOTE:  Individual types of archival materials may be
              described separately, e.g., Cartularies, Charters,
              Public records, etc., and may be qualified by the
              subdivision "Conservation and restoration".
       =========================================================
              -- Conservation and restoration
                    -- Audio-visual aids

    Archives
       =========================================================
       NT  Archival materials
       NOTE:  This term is generally used to refer to buildings
              in which archival materials are housed.
       =========================================================
              -- Air conditioning
              ==================================================
              BT  Air conditioning
                  Dampness in buildings
              ==================================================
              -- Conservation and restoration
              -- Fires and fire prevention
              ==================================================
              BT  Fire prevention
              ==================================================
              -- Flood damage
              ==================================================
              BT  Flood damage
              ==================================================
              -- Pest control
              ==================================================
              RT  Household pests -- Control
              ==================================================
              -- Security measures
              ==================================================
              RT  Books -- Mutilation, defacement, etc.
              ==================================================

    Archives, Motion picture
       =========================================================
       RT  Motion picture film collections
       NOTE:  Subdivided as the term "Archives".
       =========================================================

    Armorial bookbindings USE Bookbinding -- Armorial bindings

    Art
              -- Conservation and restoration
              ==================================================
              NT  Art restorers
              ==================================================
                    -- Data processing
              -- Hinging
              -- Matting
              -- Radiography
              -- Reproduction

    Art museums
              -- Lighting

    Art objects -- Conservation and restoration

    Art restorers
       =========================================================
       BT  Art -- Conservation and restoration
       =========================================================

    Art treasures in war
       =========================================================
       BT  Cultural property, Protection of
           Cultural property, Protection of (International law)
       =========================================================

    Artificial fibers USE Textile fibers, Synthetic

    Artificial leather USE Leather, Artificial

    Artists' materials
       =========================================================
       NT  Acrylic resins
           Artists' tools
       RT  Bookbinding -- Materials
       =========================================================
              -- Effect of light on
              -- Formulae
              -- Tables

    Artists' tools
       =========================================================
       BT  Artists' materials
       =========================================================

    Arts and crafts movement
       =========================================================
       NT  Bookbinding
           Leather work
       =========================================================

    Atmospheric humidity USE Humidity

    Atmospheric water vapor USE Water vapor, Atmospheric

    Attagenus
       =========================================================
       BT  Insect pests
       NT  Black carpet beetle
           Carpet beetles
       =========================================================
              -- Control

    Attagenus megatoma USE Black carpet beetle

    Audio tapes USE Phonotapes

    Audio-visual materials
       =========================================================
       BT  Library materials
       NT  Motion pictures
           Slides (Photography)
           Sound recordings
           Transparencies
       =========================================================
              -- Preservation and storage

    Audiocassettes -- Preservation and storage
       =========================================================
       BT  Phonotapes -- Preservation and storage
       =========================================================

    Audiotapes USE Phonotapes

    Automatic sprinklers USE Fire sprinklers

    Autotype process printing
       =========================================================
       BT  Intaglio printing
           Printing, Practical
       =========================================================

    AV materials USE Audio-visual materials

    Bacteriacides USE Bactericides

    Bactericides
       =========================================================
       BT  Disinfection and disinfectants
           Pesticides
       RT  Antibacterial agents
           Insecticides
       =========================================================
              -- Environmental aspects
              -- Law and legislation
              -- Solubility

    Baroque bookbinding USE Bookbinding, Baroque

    Bases (Chemistry)
       =========================================================
       RT  Neutralization (Chemistry)
       =========================================================

    Beating (Wood-pulp) USE Wood-pulp -- Refining

    Beetles
       =========================================================
       BT  Insect pests
       NT  Anobiidae
           Carpet beetles
           Lyctidae
       =========================================================
              -- Control

    Bibliographic information, Exchange of  USE  Exchange of
    bibliographic information

    Bibliographical exhibitions
       =========================================================
       RT  Book industries and trade -- Exhibitions
           Bookbinding -- Exhibitions
           Illumination of books and manuscripts -- Exhibitions
           Illustration of books -- Exhibitions
           Library exhibits
           Manuscripts -- Exhibitions
           Printing -- Exhibitions
       =========================================================

    Bibliography
       =========================================================
       NOTE:  This subject heading includes works on description
              of books, particularly rare books, rather than
              lists of books and titles.
       =========================================================

    Biological polymers USE Biopolymers

    Biopolymers
       =========================================================
       BT  Polymers and polymerization
       RT  Polysaccharides
       =========================================================

    Black carpet beetle
       =========================================================
       BT  Attagenus
           Carpet beetles
           Insect pests
       =========================================================
              -- Control

    Black liquor USE Sulphate waste liquor

    Blattellidae
       =========================================================
       BT  Cockroaches
           Insect pests
       =========================================================
              -- Control

    Blattaoidea USE Cockroaches

    Blattaria USE Cockroaches

    Bleaching
       =========================================================
       NT  Wood-pulp -- Bleaching
       RT  Dyes and dyeing
       =========================================================

    Bleaching materials
       =========================================================
       NT  Optical brighteners
       =========================================================

    Book boxes
       =========================================================
       BT  Books -- Conservation and restoration
           Box making
       =========================================================
              -- Handbooks, manuals, etc.

    Book chutes USE Book drops

    Book covers
       =========================================================
       NT  Book jackets
       =========================================================
              -- Conservation and restoration

    Book design
       =========================================================
       BT  Book industries and trade
           Books -- Format
       RT  Printing, Practical -- Layout
       =========================================================

    Book drops

    Book ends

    Book industries and trade
       =========================================================
       NT  Book design
           Bookbinding
           Bookbinding industry
       =========================================================
              -- Equipment and supplies
              -- Exhibitions
              ==================================================
              RT  Bibliographical exhibitions
              ==================================================

    Book jackets
       =========================================================
       BT  Book covers
       =========================================================

    Book margins USE Margins in books

    Book ornamentation
       =========================================================
       NT  Bookbinding -- Ornamental bindings
           Fore-edge painting
       =========================================================

    Book-plates

    Book-plates, Library

    Book repairing  USE  Books -- Conservation and restoration

    Book return depositories USE Book drops

    Book selection
       =========================================================
       BT  Collection development (Libraries)
       RT  Discarding of books, periodicals, etc.
           Periodical selection
       =========================================================

    Book spines
              -- Conservation and restoration
              -- Format

    Book-sewing machines
       =========================================================
       BT  Bookbinding machinery
       =========================================================

    Book thefts
       =========================================================
       RT  Libraries -- Security measures
       =========================================================

    Book-worms
       =========================================================
       BT  Insect pests
       RT  Books -- Conservation and restoration
       =========================================================
              -- Control

    Bookbinders
       =========================================================
       NT  Women bookbinders
       =========================================================

    Bookbinding
       =========================================================
       BT  Arts and crafts movement
           Book industries and trade
           Leather industry and trade
           Print finishing process
       NT  Endpapers
           Headbands (Bookbinding)
           Marbling (Bookbinding)
           Pastedowns
       =========================================================
              -- Armorial bindings
                    -- Conservation and restoration
              -- Cloth bindings
                    -- Conservation and restoration
              -- Conservation and restoration USE Bookbinding --
                    Repairing
              -- Embossed bindings
              ==================================================
              RT  Bookbinding -- Stamped bindings
              ==================================================
                    -- Conservation and restoration
              -- Embroidered bindings
                    -- Conservation and restoration
              -- Exhibitions
              ==================================================
              RT  Bibliographical exhibitions
              ==================================================
              -- Forgeries
              -- Gilding
              ==================================================
              BT  Gilding
              ==================================================
              -- Handbooks, manuals, etc.
              -- Illustrated bindings  USE  Bookbinding --
                    Pictorial bindings
              -- Ivory bindings
                    -- Conservation and restoration
              -- Jeweled bindings
                    -- Conservation and restoration
              -- Leather bindings
                    -- Conservation and restoration
              -- Machinery  USE  Bookbinding machinery
              -- Marbling  USE  Marbling (Bookbinding)
              -- Materials
              ==================================================
              RT  Artists' materials
              ==================================================
              -- Mosaic bindings
                    -- Conservation and restoration
              -- Ornamental bindings
              ==================================================
              BT  Book ornamentation
              ==================================================
                    -- Conservation and restoration
              -- Painted bindings
                    -- Conservation and restoration
              -- Paper bindings
                    -- Conservation and restoration
                    ============================================
                    RT  Paperbacks -- Conservation and
                           restoration
                    ============================================
              -- Pictorial bindings
                    -- Conservation and restoration
              -- Publishers' bindings
                    -- Conservation and restoration
              -- Repairing
              ==================================================
              BT  Books -- Conservation and restoration
              ==================================================
                    -- Handbooks, manuals, etc.
              -- Silver bindings
                    -- Conservation and restoration
              -- Specimens
              ==================================================
              NT  Portas
              ==================================================
                    -- Conservation and restoration
              -- Stamped bindings
              ==================================================
              RT  Bookbinding -- Embossed bindings
              ==================================================
                    -- Conservation and restoration
              -- Standards
              -- Vocational guidance

    Bookbinding, Baroque
              -- Conservation and restoration

    Bookbinding, Islamic
              -- Conservation and restoration

    Bookbinding, Medieval
              -- Conservation and restoration

    Bookbinding, Muslim  USE  Bookbinding, Islamic

    Bookbinding, Renaissance
              -- Conservation and restoration

    Bookbinding, Victorian
              -- Conservation and restoration

    Bookbinding industry
       =========================================================
       BT  Book industries and trade
       =========================================================

    Bookbinding machinery
       =========================================================
       NT  Book-sewing machines
       =========================================================

    Bookbinding machinery industry

    Bookcases
       =========================================================
       BT  Shelving for books
       =========================================================

    Books
       =========================================================
       NT  Brittle books
           Chap-books
           Comic books, strips, etc.
           Drawing books
           Hand-printed books
           Illustrated books
           Pamphlets
       =========================================================
              -- Care USE Books -- Conservation and restoration
              -- Conservation and restoration
              ==================================================
              BT  Books -- Mutilation, defacement, etc.
              NT  Book boxes
                  Bookbinding -- Repairing
                  Books -- Disinfection
              RT  Book-worms
                  Books -- Deacidification
                  Paper -- Preservation
                  Preservation of materials
              ==================================================
                    -- Defacement  USE  Books -- Mutilation,
                          defacement, etc.
                    -- Dictionaries
                    -- Handbooks, manuals, etc.
                    -- Standards
                    -- Tropical conditions
              -- Deacidification
              ==================================================
              RT  Books -- Conservation and restoration
                  Neutralization (Chemistry)
                  Paper -- Preservation
              ==================================================
              -- Defacement  USE  Books -- Mutilation,
                    defacement, etc.
              -- Disinfection
              ==================================================
              BT  Books -- Conservation and restoration
                  Disinfection and disinfectants
              NT  Paper -- Disinfection
              ==================================================
              -- Exhibitions USE Bibliographical exhibitions
              -- Format
              ==================================================
              NT  Book design
                  Books -- Sizes
              ==================================================
              -- Margins  USE  Margins in books
              -- Mutilation, defacement, etc.
              ==================================================
              RT  Archives -- Security measures
                  Books -- Conservation and restoration
                  Libraries -- Security measures
                  Manuscripts -- Mutilation, defacement, etc.
              ==================================================
              -- Preservation  USE  Books -- Conservation and
                    restoration
              -- Repairing  USE  Books -- Conservation and
                    restoration
              -- Restoration  USE  Books -- Conservation and
                    restoration
              -- Storage
              -- Sizes
              ==================================================
              BT  Books -- Format
              RT  Miniature books
              ==================================================

    Books, Brittle USE Brittle books

    Books, Hand-printed  USE  Hand-printed books

    Books, Illustrated USE Illustrated books

    Books, Talking USE Talking books

    Books, Vellum printed USE Vellum printed books

    Books on microfilm
       =========================================================
       BT  Microfilms
       =========================================================
              -- Catalogs

    Books on phonorecords USE Talking books

    Books on phonotapes USE Talking books

    Bookworms USE Book-worms

    Box making
       =========================================================
       NT  Book boxes
       NOTE:  This term includes general works.  The term "Book
              boxes" is specific to books.
       =========================================================

    Brighteners, Optical USE Optical brighteners

    Brittle books
       =========================================================
       BT  Books
       =========================================================

    Bromotrifluoromethane
       =========================================================
       BT  Fire extinguishing agents
       =========================================================

    Buffalo bugs USE Carpet beetles

    Buffer solutions
       =========================================================
       BT  Hydrogen-ion concentration
           Ionic solutions
       RT  Neutralization (Chemistry)
       =========================================================
              -- Deterioration
              -- Solubility

    Building, Fireproof
       =========================================================
       BT  Fire prevention
       RT  Insurance engineering
       =========================================================

    Buildings
       =========================================================
       NT  Library buildings
           Musuem buildings
       =========================================================
             -- Fires and fire prevention USE Fire prevention
             -- Natural disaster effects
             ===================================================
             BT  Natural disasters
             ===================================================

    Buildings, Library USE Library buildings

    Business records -- Conservation and restoration

    Carbon paper
       =========================================================
       BT  Paper
       =========================================================

    Cardboard USE Paperboard

    Carpet beetles
       =========================================================
       BT  Attagenus
           Beetles
           Insect pests
       NT  Black carpet beetle
       =========================================================
              -- Control

    Cartularies -- Conservation and restoration

    Cassette books USE Talking books

    Cassette newspapers USE Talking newspapers

    Cassettes, Audio USE Audiocassettes

    CD-I technology
       =========================================================
       BT  Compact discs
           Optical storage devices
       =========================================================

    CD-ROM
       =========================================================
       BT  Compact discs
           Optical storage devices
       =========================================================

    Cellulose
       =========================================================
       NT  Cellulose fibers
           Cellulose industry
           Hemicellulose
           Lignocellulose
           Nitrocellulose
           Pyroxylin
       RT  Dyes and dying -- Cellulose
           Wood -- Chemistry
       =========================================================
              -- Biodegradation
              -- Chemistry
              -- Dyeing USE Dyes and dyeing -- Cellulose
              -- Microbiology
              -- Spectra
              -- Synthesis

    Cellulose fibers
       =========================================================
       BT  Cellulose
           Fibers
           Plant fibers
       =========================================================

    Cellulose industry
       =========================================================
       BT  Cellulose
       =========================================================

    Cellulose nitrates USE Nitrocellulose

    Chap-books
       =========================================================
       BT  Books
           Pamphlets
       RT  Comic books, strips, etc.
       NOTE: Subdivided as the term "Books".
       =========================================================

    Charters -- Conservation and restoration

    Chemical control of pests USE Pests -- Control

    Chemicals, Photographic USE Photographic chemicals

    Chemigraph
       =========================================================
       BT  Photomechanical processes
       =========================================================
              -- Conservation and restoration

    Chemistry, Photographic USE Photographic chemistry

    Chromatographic analysis
       =========================================================
       NT  Paper chromatography
           Radiochromatography
       =========================================================
              -- Equipment and supplies

    Chromolithography
       =========================================================
       BT  Engraving
       RT  Color-printing
           Color prints
           Lithography
       =========================================================

    Church records and registers
       =========================================================
       NOTE: Subdivided as the term "Archives"
       =========================================================

    Church records on microfilm
       =========================================================
       BT  Microfilms
       RT  Microfiches
           Microforms
       =========================================================

    Cinematographic film USE Motion picture film

    Clippings (Books, newspapers, etc.)
       =========================================================
       RT  Library materials
           Newspapers
       =========================================================
              -- Conservation and restoration

    Cloth USE Textile fabrics

    Cloth bookbindings USE Bookbinding -- Cloth bindings

    Coated paper USE Paper coatings

    Cockroaches
       =========================================================
       BT  Insect pests
       NT  Blattelidae
       =========================================================
              -- Control

    Cold storage
       =========================================================
       RT  Refrigeration and refrigerating machinery
       NOTE:  This term is usually used in relation to food or
              produce.
       =========================================================

    Cold storage lockers
       =========================================================
       BT  Refrigeration and refrigerating machinery
           Refrigerators
       NOTE:  This term is usually used in relation to food or
              produce.
       =========================================================

    Collection development (Libraries)
       =========================================================
       NT  Book selection
           Discarding of books, periodicals, etc.
           Periodical selection
       =========================================================

    Collotype
       =========================================================
       BT  Photomechanical processes
       =========================================================
              -- Conservation and restoration
              ==================================================
              RT  Photographs -- Conservation and restoration
              ==================================================

    Color motion pictures -- Preservation and storage

    Color photographic papers  USE  Color photography -- Printing
    papers

    Color photography
       =========================================================
       BT  Photography
       =========================================================
              -- Autochrome process
              -- Developing and developers
              ==================================================
              BT  Photographic chemicals
              ==================================================
              -- Films
              -- Handbooks, manuals, etc.
              -- Lippmann process
              -- Printing papers
              ==================================================
              BT  Photography -- Printing papers
              ==================================================
                    -- Conservation and restoration
              -- Printing processes
              ==================================================
              BT  Photography -- Printing processes
              ==================================================
                    -- Dye transfer process
                    -- Pigment
              -- Processing
              ==================================================
              BT  Photography -- Processing
              ==================================================
              -- Three-color process
              ==================================================
              BT  Color-printing
                  Photoengraving
              ==================================================

    Color-printing
       =========================================================
       BT  Printing, Practical
       NT  Color photography -- Three-color process
       RT  Chromolithography
           Color photography -- Three-color process
           Kwik Print process
       =========================================================

    Color prints
       =========================================================
       BT  Prints
       RT  Chromolithography
           Engraving
       NOTE:  Works dealing with color work in practical printing
              are entered under the heading, Color-printing.
       =========================================================
              -- Conservation and restoration

    Color prints (Photography)  USE  Color photography --
    Printing processes

    Color sensitometry (Photography)
       =========================================================
       BT  Photographic sensitometry
       =========================================================

    Coloring matter
       =========================================================
       NT  Dyes and dyeing
           Pigments
       =========================================================

    Coloring of photographs USE Photographs -- Coloring

    Colors

    COM  USE  Computer output microfilm

    Comic books, strips, etc.
       =========================================================
       BT  Books
       RT  Chap-books
       NOTE:  Subdivided as the term "Books"
       =========================================================

    Compact disc interactive technology USE CD-I technology

    Compact disc read-only memory USE CD-ROM

    Compact discs
       =========================================================
       NT  CD-I Technology
           CD-ROM
       =========================================================

    Compact disk interactive technology USE CD-I technology

    Compact disk read-only memory USE CD-ROM

    Computer output microfilm
       =========================================================
       BT  Microfilms
           Micrographics
       =========================================================

    Computer output microfilm devices

    Computer storage devices
       =========================================================
       NT  Optical storage devices
       =========================================================

    Computers
              -- Optical equipment
              ==================================================
              NT  Optical storage devices
              ==================================================

    Conservation methods, Museum  USE  Museum conservation
    methods

    Conservation of art objects  USE  Art objects -- Conservation
    and restoration

    Conservation of books  USE  Books -- Conservation and
    restoration

    Conservation of leather work  USE  Leather work --
    Conservation and restoration

    Conservation of manuscripts  USE  Manuscripts -- Conservation
    and restoration

    Conservation of photographs  USE  Photographs -- Conservation
    and restoration

    Conservation of prints  USE  Prints -- Conservation and
    restoration

    Continuous motion pictures USE Loop films

    Control of pests USE Pests -- Control

    Copiers USE Copying machines

    Copper engraving USE Engraving

    Copy art -- Conservation and restoration

    Copying
       =========================================================
       NT  Library materials -- Reproduction
           Manuscripts -- Reproduction
           Maps -- Reproduction
       RT  Copying processes
       =========================================================
              -- Handbooks, manuals, etc.

    Copying machine equipment industry
       =========================================================
       NT  Toners (Xerography) industry
       =========================================================

    Copying machine industry

    Copying machines
              -- Equipment and supplies

    Copying processes
       =========================================================
       NT  Photocopying processes
           Reproduction paper
           Thermography (Copying process)
           Xerography
       RT  Copying
           Photocopying services in libraries
       =========================================================
              -- Handbooks, manuals, etc.

    Copying services

    Copyright
       =========================================================
       NT  Copyright, International
           Public domain (Copyright law)
       =========================================================
              -- Assignment USE Copyright -- Transfer
              -- Criminal provisions USE Copyright infringement
              -- Duration
              -- Fair use USE Fair use (Copyright)
              -- Information storage and retrieval systems
              -- Machine-readable bibliographic data
              -- Manuscripts
              -- Motion picture music
              -- Motion pictures
              -- Moving-pictures USE Copyright -- Motion pictures
              -- Music
              -- Newspaper articles
              ==================================================
              RT  Newspapers
              ==================================================
              -- Phonotapes
              -- Photographs
              -- Public domain USE Public domain (Copyright law)
              -- Renewal USE Copyright -- Duration
              -- Sound motion pictures
              -- Sound recordings
              ==================================================
              RT  Magnetic recorders and recording -- Fair use
                     (Copyright)
              ==================================================
              -- Transfer
              -- Unauthorized reprints
              ==================================================
              BT  Copyright infringement
              ==================================================
              -- Unauthorized reproductions of sound recordings
              ==================================================
              BT  Copyright infringement
              ==================================================
              -- Unauthorized reproductions of video recordings
              ==================================================
              BT  Copyright infringement
              ==================================================

    Copyright, International
       =========================================================
       BT  Copyright
       NOTE:  Subdivided as the term "Copyright".
       =========================================================

    Copyright infringement
       =========================================================
       NT  Copyright -- Unauthorized reprints
           Copyright -- Unauthorized reproduction of sound
              recordings
           Copyright -- Unauthorized reproduction of video
              recordings
           Fair use (Copyright)
       =========================================================

    Cotton
       =========================================================
       NT  Cotton fabrics
       RT  Textile fibers
       =========================================================
              -- Dyeing USE Dyes and dyeing -- Cotton

    Cotton fabrics
       =========================================================
       BT  Cotton
           Cotton textiles
           Textile fabrics
       =========================================================
              -- Preservation

    Cotton fabrics, Effect of light on

    Cotton textiles
       =========================================================
       NT  Cotton fabrics
       =========================================================

    Court records -- Conservation and restoration

    Court records on microfilm
       =========================================================
       BT  Microfilms
       =========================================================

    Cryobiology
       =========================================================
       NT  Freeze-drying
       =========================================================

    Cultural property, Protection of
       =========================================================
       NT  Art treasures in war
       =========================================================
              -- Law and legislation
              ==================================================
              NT  Cultural property, Protection of (International
                     law)
              ==================================================
                        -- Criminal provisions

    Cultural property, Protection of (International law)
       =========================================================
       BT  Cultural property, Protection of -- Law and
              legislation
       NT  Art treasures in war
       =========================================================

    Cylinder recordings USE Phonocylinders

    Daguerreotype -- Conservation and restoration

    Dampness in buildings
       =========================================================
       NT  Archives -- Air conditioning
           Humidity -- Control
           Libraries -- Air conditioning
       RT  Air conditioning
           Libraries -- Heating and ventilation
       =========================================================

    Dampwood termites USE Hodotermitidae

    Data storage and retrieval systems  USE  Information storage
    and retrieval systems

    Data tapes -- Preservation and storage
       =========================================================
       NT  Magnetic tapes -- Preservation and storage
       =========================================================

    Dating of manuscripts USE Manuscript dating

    Deacidification of books USE Books -- Deacidification

    Death watch beetle USE Xestobium rufovillosum

    Decorative paper
       =========================================================
       BT  Paper
       NT  Marbled papers
           Paste papers
       =========================================================

    Defacement of books USE Books -- Mutilation, defacement, etc.

    Defacement of manuscripts  USE  Manuscripts -- Mutilation,
    defacement, etc.

    Defibrators
       =========================================================
       BT  Wood-pulp industry -- Equipment and supplies
       =========================================================

    Dehumidification USE Humidity -- Control

    Design, Book USE Book design

    Destructive insects USE Insect pests

    Deterioration of microfilms USE Microfilms -- Deterioration

    Deterioration of paper USE Paper -- Deterioration

    Deterioration of plastics USE Plastics -- Deterioration

    Deterioration of polymeric materials  USE  Polymers and
    polymerization -- Deterioration

    Diazo microfilm
       =========================================================
       BT  Microfilms
       =========================================================
              -- Effects of light on
              ==================================================
              BT  Photochemistry
              ==================================================
              -- Preservation and storage

    Diazo print USE Diazotype

    Diazotype
       =========================================================
       BT  Photocopying processes
       =========================================================
              -- Conservation and restoration

    Disaster insurance USE Insurance, Disaster

    Disaster relief
       =========================================================
       NT  Insurance, Disaster
       NOTE:  This heading is most often used with regard to
              disasters involving people.
       =========================================================
              -- Planning

    Disasters

    Discarding of books, periodicals, etc.
       =========================================================
       BT  Collection development (Libraries)
       RT  Book selection
           Discarding of manuscripts, etc.
           Periodical selection
       =========================================================

    Discarding of manuscripts, etc.
       =========================================================
       RT  Discarding of books, periodicals, etc.
       =========================================================

    Discs, Video USE Video discs

    Disinfectants USE Disinfection and disinfectants

    Disinfection and disinfectants
       =========================================================
       NT  Air -- Purification
           Bactericides
           Books -- Disinfection
           Ethylene oxide
           Formaldehyde
           Fumigants
           Refrigeration as a disinfectant
       RT  Fumigation
       =========================================================
              -- Environmental aspects
              -- Handbooks, manuals, etc.

    Disks, Magnetic USE Magnetic disks

    Disks, Optical USE Optical disks

    Documents -- Conservation and restoration  USE Manuscripts --
    Conservation and restoration

    Documents in machine-readable form

    Documents in microform
       =========================================================
       BT  Microforms
       =========================================================

    Documents in optical storage

    Documents on microfiche
       =========================================================
       BT  Microfiches
       =========================================================

    Documents on microfilm
       =========================================================
       BT  Microfilms
       =========================================================

    Dorcatomidae USE Anobiidae

    Drawing -- Conservation and restoration

    Drawing books
       =========================================================
       BT  Books
       NOTE:  Subdivided as the term "Books".
       =========================================================
              -- Conservation and restoration

    Drying apparatus

    Duplicating machines USE Copying machines

    Duplication paper USE Reproduction paper

    Duplication processes USE Copying processes

    Dust
       =========================================================
       BT  Particles
       RT  Indoor air pollution
       =========================================================
              -- Bacteriology USE Dust -- Microbiology
              -- Microbiology
              -- Prevention
              ==================================================
              NT  Air filters
              ==================================================

    Dust control USE Dust -- Prevention

    Dust jackets USE Book jackets

    Dye transfer process  USE  Color photography -- Printing
    processes -- Dye transfer process

    Dyeing USE Dyes and dyeing

    Dyeline USE Diazotype

    Dyes and dyeing
       =========================================================
       BT  Pigments
       NT  Optical brighteners
       RT  Bleaching
           Coloring matter
       =========================================================
              -- Cellulose
              ==================================================
              BT  Cellulose
              ==================================================
              -- Chemistry
              ==================================================
              NT  Textile chemistry
              ==================================================
              -- Cotton
              -- Equipment and supplies
              -- Hides and skins  USE  Hides and skins --
                    Dressing and dyeing
              -- Leather
              ==================================================
              BT  Leather industry and trade
              ==================================================
              -- Paper
              ==================================================
              BT  Papermaking
              ==================================================
              -- Textile fibers
              ==================================================
              BT  Textile chemicals
              ==================================================

    Dyestuffs USE Dyes and dyeing -- Chemistry

    Electric lamps
       =========================================================
       BT  Lamps
           Light sources
       RT  Electric lighting
       =========================================================

    Electric lamps, Fluorescent USE Fluorescent lamps

    Electric lamps, Incandescent
       =========================================================
       RT  Electric lighting, Incandescent
       =========================================================

    Electric light USE Electric lighting

    Electric lighting
       =========================================================
       BT  Electric lamps
           Lighting
       NT  Light sources
       =========================================================

    Electric lighting, Fluorescent  USE  Fluorescent Lighting

    Electric lighting, Incandescent  USE  Electric lamps,
    Incandescent

    Electrolysis of water  USE  Water -- Electrolysis

    Electronic apparatus and appliances
              -- Plastic embedment
              ==================================================
              RT  Plastics -- Welding
              ==================================================

    Electrophoresis
       =========================================================
       NT  Paper electrophoresis
       =========================================================

    Electrophotography
       =========================================================
       BT  Photocopying processes
           Photoelectronic devices
           Photography
           Photomechanical processes
       NT  Electrostatic printing
           Ferromagnetography
       =========================================================
              -- Copying
              -- Handbooks, manuals, etc.
              -- Library applications
              ==================================================
              RT  Photocopying services in libraries
              ==================================================

    Electrostatic printing
       =========================================================
       BT  Electrophotography
           Non impact printing
           Photocopying processes
       NT  Xerography
       =========================================================

    Electrotyping
       =========================================================
       BT  Printing, Practical
       RT  Stereotyping
       =========================================================

    Embossed bookbindings  USE  Bookbinding -- Embossed bindings

    Embroidered bookbindings  USE  Bookbinding -- Embroidered
    bindings

    Emergency preparedness  USE  Disaster relief

    Emergency relief  USE  Disaster relief

    Emulsion polymerization
       =========================================================
       BT  Polymers and polymerization
       =========================================================

    Emulsions
       =========================================================
       NT  Photographic emulsions
       =========================================================

    Encapsulation (Electronics)  USE  Electronic apparatus and
    appliances -- Plastic embedment

    Endpapers
       =========================================================
       BT  Bookbinding
       NT  Marbling (Bookbinding)
           Pastedowns
       =========================================================
              -- Conservation and restoration

    Engraving
       =========================================================
       NT  Chromolithography
           Color prints
           Mezzotint engraving
           Photoengraving
           Photogravure
       =========================================================
              -- Conservation and restoration

    Environmental monitoring

    Epoxyethane USE Ethylene oxide

    Esters
       =========================================================
       NT  Polyesters
       =========================================================

    Etching

    Ethenyloxyethane USE Vinyl ethers

    Ethers
       =========================================================
       NT  Vinyl ethers
       =========================================================

    Ethylene oxide
       =========================================================
       BT  Disinfection and disinfectants
           Insecticides
       =========================================================
              -- Safety measures
                    -- Handbooks, manuals, etc.
              -- Toxicology

    ETO USE Etylene oxide

    Exchange of bibliographic information

    Extermination USE Pests -- Control

    Extinction of fires USE Fire extinction

    Extinguishers, Fire USE Fire extinguishers

    Fabrics USE Textile fabrics

    Facsimilie transmission -- Library applications

    Facsimilies

    Fair use (Copyright)
       =========================================================
       BT  Copyright infringement
       NT  Magnetic recorders and recording -- Fair use
              (Copyright)
           Photocopying processes -- Fair use (Copyright)
           Video recordings -- Fair use (Copyright)
       =========================================================

    Family archives -- Conservation and restoration

    Felts (Papermaking) USE Papermaking machinery felts

    Ferrography (Photomechanical process) USE Ferromagnetography

    Ferromagnetography
       =========================================================
       BT  Photomechanical processes
       RT  Electrophotography
       =========================================================

    Ferrotype USE Tintype

    Fibers
       =========================================================
       NT  Cellulose fibers
           Paper
           Plant fibers
           Textile fibers
           Thread
       =========================================================

    Fibers, Polyester USE Polyester fibers

    Filigrains USE Water-marks

    Fillers (in paper, paint, etc.)
       =========================================================
       BT  Paint
           Paper -- Optical properties
           Textile chemicals
       =========================================================

    Film, Cinematographic USE Motion picture film

    Film, Motion picture USE Motion picture film

    Film libraries USE Motion picture film collections

    Film loops USE Loop films

    Films USE Microfilms
          USE Motion pictures

    Films, Polyester USE Polyester films

    Filmstrips -- Conservation and restoration

    Filters and filtration
       =========================================================
       NT  Air filters
       RT  Light filters
       =========================================================

    Fire-alarms

    Fire detectors

    Fire extinction
       =========================================================
       NT  Fire sprinklers
       RT  Insurance engineering
       =========================================================
              -- Chemical systems
              -- Equipment and supplies
              -- Water-supply

    Fire extinguishers

    Fire extinguishing agents
       =========================================================
       NT  Bromotrifluoromethane
       =========================================================

    Fire inspection USE Fire prevention -- Inspection

    Fire Inspection Reporting System (Computer system)  USE  FIRS
    (Computer system)

    Fire prevention
       =========================================================
       NT  Archives -- Fires and fire prevention
           Building, Fireproof
           Libraries -- Fires and fire prevention
       RT  Insurance engineering
       NOTE:  The subheading "Fires and fire prevention" may be
              used under types of buildings and institutions,
              e.g., "Libraries -- Fires and fire prevention".
       =========================================================
              -- Data processing
              ==================================================
              NT  FIRS (Computer system)
              ==================================================
              -- Equipment and supplies
              -- Inspection

    Fire safety USE Fire prevention

    Fire sprinklers
       =========================================================
       BT  Fire extinction
       =========================================================
              -- Law and legislation

    Fire warning systems USE Fire-alarms

    Firebrat
       =========================================================
       BT  Insect pests
           Thermobia
       =========================================================
              -- Control

    Firefighting USE Fire extinction

    Fireproof building USE Building, Fireproof

    FIRS (Computer system)
       =========================================================
       BT  Fire prevention -- Data processing
       =========================================================

    Flood damage
       =========================================================
       BT  Floods
       NT  Archives -- Flood damage
           Libraries -- Flood damage
       RT  Flood damage prevention
       =========================================================

    Flood damage prevention
       =========================================================
       BT  Floods
       RT  Flood damage
       =========================================================

    Floods
       =========================================================
       BT  Natural disasters
       NT  Flood damage
           Flood damage prevention
       =========================================================

    Fluorescence
       =========================================================
       NT  Optical brighteners
       =========================================================

    Fluorescent lamps

    Fluorescent lighting

    Fluorescent whitening agents USE Optical brighteners

    Flyleaf USE Endpapers

    Fore-edge painting
       =========================================================
       BT  Book ornamentation
       =========================================================
              -- Conservation and restoration

    Formaldehyde
       =========================================================
       BT  Disinfection and disinfectants
       =========================================================
              -- Toxicology

    Formalin USE Formaldehyde

    Format of books USE Books -- Format

    Format of microfiches USE Microfiches -- Format

    Format of periodicals USE Periodicals -- Format

    Freeze-drying
       =========================================================
       BT  Cryobiology
           Refrigeration and refrigerating machinery
       RT  Paper -- Drying
       =========================================================

    Freezing USE Cryobiology

    Fumigants
       =========================================================
       BT  Disinfection and disinfectants
           Pesticides
       NOTE:  Individual fumigants and groups of fumigants may be
              described separately, e.g., "Aluminum phosphide".
       =========================================================
              -- Deterioration
              -- Environmental aspects
              -- Solubility

    Fumigation
       =========================================================
       RT  Disinfection and disinfectants
       =========================================================
              -- Handbooks, manuals, etc.
              -- Environmental aspects

    Fungi
       =========================================================
       NT  Mildew
           Molds (Botany)
       RT  Mycology
       =========================================================
              -- Identification

    Fungicides
       =========================================================
       BT  Pesticides
       =========================================================
              -- Law and legislation

    Galvanoplastic process USE Electrotyping

    Gelatin
       =========================================================
       NT  Photographic gelatin
       =========================================================

   (Germicides).  NOTE:  This term is not used as a Library of
    Congress subject heading; USE one of the following terms:
    Bactericides; Disinfection and disinfectants; OR Fungicides.|

    Gilding
       =========================================================
       NT  Bookbinding -- Gilding
       NOTE:  This term is general in nature.  The term
              "Bookbinding -- Gilding" is specific to book.
       =========================================================

    Glucans
       =========================================================
       RT  Starch
       =========================================================

    Glue
       =========================================================
       RT  Adhesives
           Paste
       =========================================================
              -- Deterioration
              -- Solubility

    Ground wood pulping process USE Mechanical pulping process

    Gums and resins, Synthetic
       =========================================================
       NT  Acetal resins
           Acrylic resins
           Polyesters
           Thermoplastics
       =========================================================

    Guncotton
       =========================================================
       RT  Nitrocellulose
       =========================================================

    Halon 1301 USE Bromotrifluoromethane

    Hand-printed books
       =========================================================
       BT  Books
       NOTE:  Subdivided as the term "Books".
       =========================================================

    Handmade paper USE Paper, Handmade

    Handpress
       =========================================================
       BT  Printing, Practical
       =========================================================

    Headbands (Bookbinding)
       =========================================================
       BT  Bookbinding
       =========================================================
              -- Conservation and restoration

    Heat sensitive copying processes USE Thermography (Copying
    process)

    Heat transfer images USE Thermography (Copying process)

    Heliogravure USE Photogravure

    Heliotype
       =========================================================
       BT  Photomechanical processes
       =========================================================
              -- Conservation and restoration
              ==================================================
              BT  Photographs -- Conservation and restoration
              ==================================================

    Hemicellulose
       =========================================================
       RT  Cellulose
       =========================================================

    Hides and skins
       =========================================================
       RT  Leather
           Tanning
       =========================================================
              -- Defects
              -- Disinfection
              -- Dressing and dyeing

    Hinging works of art USE Art -- Hinging

    Historical record preservation USE Archives

    Hodotermitidae
       =========================================================
       BT  Insect pests
           Termites
       =========================================================
              -- Control

    Hot melt adhesives USE Adhesives, Hot melt

    Household pests
       =========================================================
       BT  Pests
       NOTE:  Individual pests may be described separately, e.g.,
              Cockroaches.
       =========================================================
              -- Control
              ==================================================
              RT  Archives -- Pest control
                  Libraries -- Pest control
              ==================================================

    Humidification USE Humidity -- Control

    Humidity
       =========================================================
       RT  Water vapor, Atmospheric
       NT  Hygrometry
           Moisture
       =========================================================
              -- Control
              ==================================================
              BT  Air conditioning
                  Dampness in buildings
              ==================================================
              -- Measurement USE Hygrometry

    Humidity meters USE Moisture meters

    Hydrogen-ion concentration
       =========================================================
       NT  Buffer solutions
           Neutralization (Chemistry)
       RT  Ionic solutions
           Ionization
           Water -- Electrolysis
       =========================================================
              -- Measurement USE Hygrometry

    Hydrolysis

    Hygrometers
       =========================================================
       NT  Wet-bulb thermometers
       RT  Moisture meters
       =========================================================

    Hygrometry
       =========================================================
       BT  Humidity
       =========================================================
              -- Handbooks, manuals, etc.
              -- Tables, etc.

    Illumination of books and manuscripts
              -- Exhibitions
              ==================================================
              RT  Bibliographical exhibitions
              ==================================================

    Illustrated bookbindings  USE  Bookbinding -- Pictorial
    bindings

    Illustrated books
       =========================================================
       BT:  Books
       NOTE:  Subdivided as the term "Books".
       =========================================================
              -- Conservation and restoration

    Illustration of books
              -- Exhibitions
              ==================================================
              RT  Bibliographical exhibitions
              ==================================================

    Image quality in imaging systems  USE  Imaging systems --
    Image quality

    Image quality of microfiches USE Microfiches -- Image quality

    Image quality of microfilms USE Microfilms -- Image quality

    Image quality of microforms USE Microforms -- Image quality

    Images, Optical
       =========================================================
       NT  Photoferroelectric effect
       =========================================================

    Images, Photographic

    Imaging systems
       =========================================================
       BT  Optoelectronic devices
           Photoelectronic devices
       NT  Laser recording
           Photoferroelectric effect
       RT  Scanning systems
       =========================================================
              -- Image quality

    Imposition (Typography)  USE  Printing, Practical --
    Imposition, etc.

    Incandescent electric lighting  USE  Electric lighting,
    Incandescent

    Incandescent lamps USE Electric lamps, Incandescent

    Incandescent lighting USE Electric lighting, Incandescent

    Incunabula -- Conservation and restoration

    India ink
       =========================================================
       BT  Ink
       =========================================================

    Indoor air pollution
       =========================================================
       RT  Dust
       =========================================================

    Information storage and retrieval systems
              -- Audio-visual materials
              -- Newspapers
              -- Photographs
                      -- Conservation and restoration
                      ==========================================
                      NT  PHOCUS (Information retrieval system)
                      ==========================================
              -- Polymers and polymerization
              ==================================================
              NT  PLASDOC (Information retrieval system)
              ==================================================
              -- Technology

    Infringement of copyright USE Copyright infringement

    Ink
       =========================================================
       BT  Writing -- Materials and instruments
       NT  India ink
           Printing ink
       =========================================================
              -- Deterioration
              -- Solubility

    Insect antifeedants

    Insect baits and repellents
       =========================================================
       BT  Repellents
           Insect pests -- Control
           Insecticides
       =========================================================

    Insect behavior USE Insects -- Behavior

    Insect cages
       =========================================================
       BT  Insect traps
       =========================================================

    Insect pests
       =========================================================
       BT  Insects
           Pests
       NT  Anobiidae
           Anobium
           Attagenus
           Beetles
           Black carpet beetle
           Blattellidae
           Book-worms
           Carpet beetles
           Cockroaches
           Firebrat
           Hodotermitidae
           Lasioderma
           Lyctidae
           Silverfish
           Termites
           Termitomyces
           Xestobium
           Xestobium ruffovillosum
       NOTE:  Individual insects and groups of insects may also
              be described by an individual or group name, e.g.,
              "Termites".
       =========================================================
              -- Biological control
              ==================================================
              NT  Insect sterilization
              ==================================================
                   -- Equipment and supplies
              -- Control
              ==================================================
              NT  Insect baits and repellents
              RT  Pesticides
              ==================================================
              -- Law and legislation

    Insect radiosterilization
       =========================================================
       BT  Insects -- Effect of radiation on
       =========================================================

    Insect repellents USE Insect baits and repellents

    Insect sterilization
       =========================================================
       BT  Insect pests -- Biological control
       =========================================================

    Insect traps
       =========================================================
       NT  Insect cages
       =========================================================

    Insecticides
       =========================================================
       BT  Pesticides
       NT  Ethylene oxide
           Insect baits and repellents
       RT  Bactericides
       NOTE:  Individual insecticides and groups of insecticides
              may be described separately, e.g., Vikane
              (Insecticide).  Library of Congress Subject
              Headings do not specify correct nomenclature,
              whether scientific or popular, but usually prefers
              the scientific.
       =========================================================
              -- Biodegradation
              -- Environmental aspects
              -- Law and legislation
              -- Toxicology

    Insects
       =========================================================
       NT  Insect pests
       NOTE:  Individual insects and groups of insects may also
              be described by an individual or group name, e.g.,
              Desert locust.
       =========================================================
              -- Baits USE Insect baits and repellents
              -- Behavior
              -- Biological control  USE  Insect pests --
                    Biological control
              -- Control USE Insect pests -- Control
              -- Development
              -- Effect of radiation on
              ==================================================
              NT  Insect radiosterilization
              ==================================================
              -- Extermination USE Insect pests -- Control
              -- Feeding and feeds
              -- Flight
              -- Geographical distribution
              -- Larvae
              -- Migration
              -- Nomenclature
              -- Nomenclature (popular)
              -- Repellents USE Insect baits and repellents
              -- Reproduction
              -- Traps USE Insect traps

    Insects, Injurious and beneficial USE Beneficial insects

    Insurance
       =========================================================
       NT  Libraries -- Insurance
       =========================================================

    Insurance, Disaster
       =========================================================
       BT  Disaster relief
       =========================================================

    Insurance, Fire

    Insurance engineering
       =========================================================
       RT  Building, Fireproof
           Fire extinction
           Fire prevention
       =========================================================

    Intaglio printing
       =========================================================
       NT  Autotype process printing
       =========================================================

    International copyright USE Copyright, International

    Ionic solutions
       =========================================================
       RT  Buffer solutions
           Hydrogen-ion concentration
       =========================================================

    Ionization
       =========================================================
       RT  Hydrogen-ion concentration
       =========================================================

    Islamic bookbinding USE Bookbinding, Islamic

    Isoptera USE Termites

    Ivory bookbindings USE Bookbinding -- Ivory bindings

    Jackets, Book USE Book jackets

    Japanese paper
       =========================================================
       BT  Paper
       RT  Tissue paper
       NOTE:  Subdivided as the term "Paper".
       NOTE:  Japanese paper is not to be confused with "Rice
              paper".  Cf, note under "Rice paper".
       =========================================================

    Jeweled bookbindings USE Bookbinding -- Jeweled bindings

    Jewish archives

    Kenaf
       =========================================================
       BT  Plant fibers
       =========================================================

    Kenaf industry

    Kineto-phonograph -- Preservation and storage
       =========================================================
       BT  Phonograph -- Preservation and storage
       =========================================================

    Kozo USE Paper mulberry

    Kraft process USE Sulphate pulping process

    Kraft waste liquor USE Sulphate waste liquor

    Kwik Print process
       =========================================================
       RT  Color-printing
       =========================================================

    Lamps
       =========================================================
       NT  Electric lamps
       =========================================================

    Laser recording
       =========================================================
       BT  Imaging systems
           Optical data processing
       RT  Optical storage devices
       =========================================================

    Lasioderma
       =========================================================
       BT  Anobiidae
           Insect pests
       =========================================================
              -- Control

    Law and art

    Leaflets USE Pamphlets

    Leather
       =========================================================
       NT  Morocco leather
       RT  Hides and skins
           Tanning
       =========================================================
              -- Bonding
              -- Conservation and restoration
              -- Defects
              -- Deterioration
              -- Dyeing USE Dyes and dyeing -- Leather
              -- Machinery

    Leather, Artificial

    Leather bookbindings USE Bookbinding -- Leather bindings

    Leather chemicals

    Leather industry and trade
       =========================================================
       NT  Bookbinding
           Dyes and dyeing -- Leather
       =========================================================
              -- Equipment and supplies

    Leather painting

    Leather substitutes

    Leather work
       =========================================================
       BT  Arts and crafts movement
       =========================================================
              -- Conservation and restoration
              -- Equipment and supplies

    Legal documents -- Conservation and restoration

    Lepisma
       =========================================================
       NT  Silverfish (Insect)
       =========================================================

    Libraries
              -- Air conditioning
              ==================================================
              BT  Air conditioning
                  Dampness in buildings
              ===================================================
                    -- Control
              -- Buildings USE Library buildings
              -- Dust control USE Dust -- Prevention
              -- Exhibitions USE Library exhibits
              -- Fires and fire prevention
              ==================================================
              BT  Fire prevention
              ==================================================
              -- Flood damage
              ==================================================
              BT  Flood damage
              ==================================================
              -- Heating and ventilation
              ==================================================
              RT  Dampness in buildings
              ==================================================
              -- Insurance
              ==================================================
              BT  Insurance
              ==================================================
              -- Security measures
              ==================================================
              RT  Book thefts
                  Books -- Mutilation, defacement, etc.
              ==================================================
              -- Shelf department
              -- Shelving  USE  Shelving (for periodicals)
              -- Special collections
                    -- Conservation and restoration
                    -- Maps
                    -- Microforms
                    ============================================
                    BT  Microforms
                    ============================================
                    -- Non-book materials
                    ============================================
                    RT  Nonbook materials
                    ============================================
                          -- Conservation and restoration
                    -- Slides (Photography)

    Libraries, Storage
       =========================================================
       BT  Library buildings
       =========================================================

    Libraries, University and college

    Library architecture

    Library book-plates USE Book-plates, Library

    Library buildings
       =========================================================
       BT  Buildings
       NT  Libraries, Storage
       =========================================================
              -- Environmental engineering
              ==================================================
              RT  Museums -- Climatic factors
              ==================================================
              -- Fires and fire prevention
              -- Lighting
              -- Natural disaster effects
              ==================================================
              RT  Natural disasters
              ==================================================
              -- Pest control
              ==================================================
              RT  Household pests -- Control
              ==================================================

    Library cooperation

    Library exhibits
       =========================================================
       RT  Bibliographical exhibitions
       =========================================================

    Library fittings and supplies

    Library insurance USE Libraries -- Insurance

    Library materials
       =========================================================
       RT  Audio-visual materials
           Nonbook materials
       NT  Clippings (Books, newspapers, etc.)
           Periodicals
       =========================================================
              -- Conservation and restoration
              ==================================================
              BT Preservation of materials
              ==================================================
                    -- Audio-visual aids
                    -- Study and teaching
              -- Deterioration
              -- Reproduction
              ==================================================
              BT  Copying
              ==================================================

    Library planning

    Library supplies USE Library fittings and supplies

    Library surveys
       =========================================================
       BT  Surveys
       =========================================================

    Light
       =========================================================
       RT  Optics
           Photographic optics
           Photometry
       =========================================================
              -- Chemical action USE Photochemistry

    Light, Electric USE Electric lighting

    Light bulbs USE Electric lamps, Incandescent

    Light filters
       =========================================================
       BT  Photographic optics
       RT  Filters and filtration
           Photometry
       =========================================================

    Light sensitive paper
              -- Conservation and restoration

    Light sources
       =========================================================
       NT  Electric lamps
           Electric lighting
       =========================================================

    Lighting
       =========================================================
       NT  Electric lighting
       =========================================================

    Lignin
       =========================================================
       RT  Wood -- Chemistry
       =========================================================
              -- Biodegradation

    Lignocellulose
       =========================================================
       BT  Cellulose
       =========================================================

    Lippmann process USE Color photography -- Lippmann process

    Lithography
       =========================================================
       BT  Prints
       NT  Offset printing
           Photolithography
       RT  Chromolithography
       =========================================================
              -- Metal plate processes
              ==================================================
              NT  Offset printing
              ==================================================

    Lithography, Direct
       =========================================================
       NT  Offset printing
       =========================================================

    Loop films -- Preservation and storage

    Lyctidae
       =========================================================
       BT  Beetles
           Insect pests
       =========================================================
              -- Control

    Lyophilization USE Freeze-drying

    Machine data storage and retrieval  USE  Information storage
    and retrieval

    Machine-readable bibliographic data
              -- Copyright  USE  Copyright -- Machine-readable
                    bibliographic data

    Machine-readable documents  USE  Documents in
    machine-readable form

    Magazines USE Periodicals

    Magnetic disks
              -- Preservation and storage

    Magnetic recorders and recording
       =========================================================
       NT  Video tape recorders and recording
       =========================================================
              -- Fair use (Copyright)
              ==================================================
              BT  Fair use (Copyright)
              RT  Copyright -- Sound recordings
              ==================================================

    Magnetic tapes -- Preservation and storage
       =========================================================
       RT  Data tapes -- Preservation and storage
       NT  Phonotapes -- Preservation and storage
           Video tapes -- Preservation and storage
       =========================================================

    Magnetography (Photomechanical process)  USE
    Ferromagnetography

    Manuscript dating

    Manuscript depositories USE Archives

    Manuscript repositories USE Archives

    Manuscripts
       =========================================================
       NT  Palm-leaf manuscripts
       RT  Archival materials
       =========================================================
              -- Conservation and restoration
                    -- Handbooks, manuals, etc.
                    -- Tropical conditions
              -- Copyright USE Copyright -- Manuscripts
              -- Defacement  USE  Manuscripts -- Mutilation,
                    defacement, etc.
              -- Exhibitions
              ==================================================
              RT  Bibliographical exhibitions
              ==================================================
              -- Facsimiles
              -- Forgeries USE Forgery of manuscripts
              -- Mutilation, defacement, etc.
              ==================================================
              RT  Books -- Mutilation, defacement, etc.
              ==================================================
              -- Reproduction
              ==================================================
              BT  Copying
              NT  Manuscripts on microfilm
                  Photocopying processes
              ==================================================
                    -- Handbooks, manuals, etc.

    Manuscripts (Papyri)
       =========================================================
       BT  Writing -- Materials and instruments
       RT  Papyrus (The plant)
       =========================================================
              -- Conservation and restoration

    Manuscripts, Palm-leaf USE Palm-leaf manuscripts

    Manuscripts on microfilm
       =========================================================
       BT  Microfilms
           Manuscripts -- Reproduction
       =========================================================

    Maps
              -- Conservation and restoration
              -- Reproduction
              ==================================================
              BT  Copying
                  Photocopying processes
              ==================================================

    Marbled papers
       =========================================================
       BT  Decorative paper
       =========================================================
              -- Conservation and restoration
              -- Specimens

    Marbling (Bookbinding)
       =========================================================
       NT  Paste papers
       RT  Bookbinding
           Endpapers
       =========================================================
              -- Handbooks, manuals, etc.

    Margins in books
       =========================================================
       BT  Printing, Practical -- Imposition, etc.
       =========================================================

    Materials, Library USE Library materials

    Matting works of art USE Art -- Matting

    Mechanical pulping process
       =========================================================
       BT  Wood-pulp
       =========================================================

    Medieval bookbinding USE Bookbinding, Medieval

    Mezzograph
       =========================================================
       BT  Photomechanical processes
           Photoengraving
       =========================================================

    Mezzotint engraving
       =========================================================
       BT  Engraving
       =========================================================

    Mice -- Control
       =========================================================
       BT  Rodents -- Control
       =========================================================

    Microcards
       =========================================================
       BT  Microforms
           Micrographics
       =========================================================
              -- Catalogs
              -- Conservation and restoration

    Microfiche services
       =========================================================
       BT  Micrographics
           Microphotography
       RT  Microfilm services
       =========================================================

    Microfiches
       =========================================================
       BT  Microforms
           Micrographics
       NT  Documents on microfiche
           Pamphlets on microfiche
           Periodicals on microfiche
       RT  Church records on microfilm
           Microfilms
       =========================================================
              -- Catalogs
              -- Conservation and restoration
              -- Equipment and supplies
              -- Format
              -- Image quality

    Microfilm, Computer output USE Computer output microfilm

    Microfilm books USE Books on microfilm

    Microfilm devices, Computer output  USE  Computer output
    microfilm devices

    Microfilm projectors
       =========================================================
       NT  Reader-printers (Microphotography)
       =========================================================

    Microfilm services
       =========================================================
       BT  Micrographics
           Microphotography
       RT  Microfiche services
       =========================================================
              -- Law and legislation

    Microfilming USE Microphotography

    Microfilms
       =========================================================
       BT  Microforms
           Micrographics
           Photography -- Films
       NT  Books on microfilm
           Church records on microfilm
           Computer output on microfilm
           Court records on microfilm
           Diazo microfilm
           Documents on microfilm
           Manuscripts on microfilm
           Newspapers on microfilm
           Out-of-print books on microfilm
           Pamphlets on microfilm
           Periodicals on microfilm
           Rare books on microfilm
       RT  Microfiches
       =========================================================
              -- Catalogs
              -- Deterioration
              -- Evaluation
              -- Format
              -- Image quality
              -- Preservation and storage

    Microforms
       =========================================================
       NT  Documents in microform
           Libraries -- Special collections -- Microforms
           Microcards
           Microfiches
           Microfilms
           Newspapers in microform
           Pamphlets in microform
           Periodicals in microform
       RT  Church records on microfilm
           Micrographics
           Microphotography
       =========================================================
              -- Catalogs
              -- Equipment and supplies
              -- Image quality
              -- Preservation and storage

    Microforms industry

    Micrographics
       =========================================================
       NT  Computer output microfilm
           Microcards
           Microfiche services
           Microfiches
           Microfilm services
           Microfilms
       RT  Microforms
           Micrographotography
       =========================================================
              -- Equipment and supplies
              -- Handbooks, manuals, etc.
              -- Law and legislation

    Microphotography
       =========================================================
       BT  Photography
       NT  Microfiche services
           Microfilm services
       RT  Microforms
           Micrographics
       =========================================================
              -- Equipment and supplies
              ==================================================
              NT  Reader-printers (Microphotography)
              ==================================================
              -- Handbooks, manuals, etc.
              -- Standards

    Micropublications USE Microforms

    Mildew
       =========================================================
       BT  Fungi
       =========================================================

    Miniature books
       =========================================================
       RT  Books -- Sizes
       NOTE:  Subdivided as the term "Books".
       =========================================================
              -- Conservation and restoration

    Moisture
       =========================================================
       NT  Water vapor, Atmospheric
       RT  Humidity
       =========================================================
              -- Measurement
                    -- Instruments
                    ============================================
                    NT  Moisture meters
                    ============================================

    Moisture control in buildings USE Dampness in buildings

    Moisture in textiles

    Moisture meters
       =========================================================
       BT  Moisture -- Measurement -- Instruments
       RT  Hygrometers
       =========================================================
              -- Calibration

    Molds (Botany)
       =========================================================
       RT  Fungi
       =========================================================

    Monomers
       =========================================================
       BT  Polymers and polymerization
       =========================================================

    Morocco leather
       =========================================================
       BT  Leather
           Tanning
       =========================================================
              -- Conservation and restoration

    Mosaic bookbindings USE Bookbinding -- Mosaic bindings

    Motion picture film
       =========================================================
       BT  Photography -- Films
       =========================================================
              -- Preservation and storage
              -- Splicing

    Motion picture film collections
       =========================================================
       RT  Archives, Motion picture
       =========================================================

    Motion pictures
       =========================================================
       BT  Audio-visual materials
       =========================================================
              -- Copyright USE Copyright -- Motion pictures
              -- Film USE Motion picture film

    Moving-picture film USE Motion picture film

    Moving-picture film collections  USE  Motion picture film
    collections

    Moving-pictures USE Motion pictures

    Moving-pictures, Loop USE Loop films

    Mulberry
       =========================================================
       RT  Paper mulberry
       NOTE:  The term "Mulberry" refers to the plant of this
              name.
       =========================================================

    Museum buildings
       =========================================================
       BT  Buildings
       RT  Museums
       =========================================================
              -- Natural disaster effects
              ==================================================
                 RT Natural disasters
              ==================================================

    Museum conservation methods
       =========================================================
       NT  Museums -- Climatic factors
       =========================================================
              -- Statistics
              -- Tropical conditions

    Museums
       =========================================================
       RT  Museum buildings
       =========================================================
              -- Climatic factors
              ==================================================
              BT  Library buildings -- Environmental engineering
                  Museum conservation methods
              ==================================================
              -- Lighting
              -- Security measures

    Muslim bookbinding USE Bookbinding, Islamic

    Mutilation of books USE Books -- Mutilation, defacement, etc.

    Mutilation of manuscripts USE Manuscripts -- Mutilation,
    defacement, etc.

    Mycology
       =========================================================
       RT  Fungi
       =========================================================

    Natural disasters
       =========================================================
       NT  Buildings -- Natural disaster effects
           Floods
           Library buildings -- Natural disaster effects
           Museum buildings -- Natural disaster effects
       NOTE:  Individual types of natural disasters may also be
              described by name, e.g., Floods; Earthquakes; etc.
       =========================================================

    Neutralization (Chemistry)
        ==========================================================
        BT  Acids
            Bases (Chemistry)
            Hydrogen-ion concentration
        RT  Books -- Deacidification
            Buffer solutions
        ==========================================================
        -- Handbooks, manuals, etc.

    Newspaper clippings USE Clippings (Books, newspapers, etc.)

    Newspapers
        ==========================================================
        NT  Clippings (Books, newspapers, etc.)
        RT  Copyright -- Newspaper articles Periodicals
        ==========================================================
        -- Conservation and restoration
        -- Facsimiles
        -- Information storage and retrieval systems USE
           Information storage and retrieval systems -- Newspapers
        -- Microform catalogs

    Newspapers in microform
        ==========================================================
        BT  Microforms
        ==========================================================
        -- Catalogs USE Newspapers -- Microform catalogs

    Newspapers on microfilm
        ==========================================================
        BT  Microfilms
        ==========================================================
        -- Catalogs USE Newspapers -- Microform catalogs

    Newsprint
        ==========================================================
        BT  Paper
        RT  Wood-pulp
        NOTE:  Subdivided as the term "Paper".
        ==========================================================
        -- Preservation

    Newsreels -- Preservation and storage

    Nitrocellulose
        ==========================================================
        BT  Cellulose
        NT  Pyroxylin
        RT  Guncotton
        ==========================================================

    Nonbook materials
        ==========================================================
        RT  Libraries -- Special collections -- Non-book materials
            Library materials
        ==========================================================
        -- Conservation and restoration

    Non impact printing
        ==========================================================
        BT  Printing, Practical
        NT  Electrostatic printing
        ==========================================================

    Offset printing
        ==========================================================
        BT  Lithography
            Lithography -- Metal plate processes
            Printing
        RT  Lithography, Direct
        ==========================================================

    Optical bleaches USE Optical brighteners

    Optical brighteners
        ==========================================================
        BT  Dyes and dyeing
            Fluorescence
        RT  Bleaching materials
            Paper -- Optical properties
        ==========================================================

    Optical data processing
        ==========================================================
        NT  Laser recording
        ==========================================================

    Optical detectors

    Optical disks
        ==========================================================
        BT  Optical storage devices
        ==========================================================

    Optical storage devices
        ==========================================================
        BT  Computer storage devices
            Computers -- Optical equipment
        NT  CD-I Technology
            CD-ROM
            Optical disks
            Photoferroelectric effect
        RT  Laser recording
        ==========================================================

    Optical storage of documents USE Documents in optical storage

    Optical whiteners USE Optical brighteners

    Optics
        ==========================================================
        RT  Light
            Photometry
        ==========================================================
        -- Laboratory manuals
        -- Tables

    Optics, Photographic USE Photographic optics

    Optoelectronic devices
        ==========================================================
        NT  Imaging systems
        ==========================================================

    Ornamental bookbindings USE Bookbindings -- Ornamental bindings

    Out-of-print books -- Catalogs
        ==========================================================
        RT  Reprints (Publications)
        ==========================================================

    Out-of-print books on microfilm
        ==========================================================
        BT  Microfilms
        ==========================================================

    Oxidants USE Oxidizing agents

    Oxidants, Photochemical USE Photochemical oxidants

    Oxidation

    Oxidizers USE Oxidizing agents

    Oxidizing agents
        ==========================================================
        NT  Photochemical oxidants
        ==========================================================

    Oxirane USE Ethylene oxide

    Paint
        ==========================================================
        NT  Fillers (in paper, paint, etc.)
        ==========================================================

    Painted bookbindings USE Bookbinding -- Painted bindings

    Painting -- Conservation and restoration

    Painting on leather USE Leather painting

    Palm-leaf manuscripts
        ==========================================================
        BT  Manuscripts
        ==========================================================
        -- Conservation and restoration

    Pamphlets
        ==========================================================
        BT  Books
        NT  Chap-books
        NOTE:  Subdivided as the term "Books".
        ==========================================================
        -- Conservation and restoration

    Pamphlets in microform
        ==========================================================
        BT  Microforms
        ==========================================================

    Pamphlets on microfiche
        ==========================================================
        BT  Microfiche
        ==========================================================

    Pamphlets on microfilm
        ==========================================================
        BT  Microfilms
        ==========================================================

    Paper
        ==========================================================
        BT  Fibers
            Writing -- Material and instruments
        NT  Absorbent paper
            Carbon paper
            Decorative paper
            Japanese paper
            Newsprint
            Paper, Handmade
            Reproduction paper
            Thermographic paper
            Tissue paper
            Waste paper
        RT  Paper, Plastic
            Paper coatings
            Papermaking
            Water-marks
        ==========================================================
        -- Analysis
        -- Bacteriology USE Paper -- Microbiology
        -- Coatings USE Paper coatings
        -- Defects
        -- Deterioration
              ====================================================
              RT  Paper -- Preservation
              NT  Paper -- Microbiology
              ====================================================
        -- Dictionaries
        -- Disinfection
              ====================================================
              BT  Books -- Disinfection
              ====================================================
        -- Dry strength
        -- Drying
              ====================================================
              RT  Freeze-drying
              ====================================================
        -- Dyeing USE Dyes and dyeing Paper
        -- Finishing USE Paper finishing
        -- Microbiology
              ====================================================
              BT  Paper -- Deterioration
              ====================================================
        -- Microscopy
              ====================================================
              BT  Paper -- Testing
              ====================================================
        -- Optical properties
              ====================================================
              RT  Fillers (in paper, paint, etc.)
                  Optical brighteners
              ====================================================
        -- Preservation
              ====================================================
              BT  Books -- Conservation and restoration
              RT  Books -- Deacidification
                  Paper -- Deterioration
                  Preservation of materials
              ====================================================
           -- Handbooks, manuals, etc.
        -- Pressing
        -- Printing properties
        -- Sample books
        -- Sizing USE Paper sizing
        -- Testing
              ====================================================
              NT  Paper -- Microscopy
              ====================================================
        -- Water removal USE Paper -- Drying
        -- Wet strength

    Paper, Handmade
        ==========================================================
        BT  Paper
        NOTE:  Subdivided as the term "Paper".
        ==========================================================

    Paper, Light sensitive USE Light sensitive paper

    Paper, Plastic
        ==========================================================
        BT  Plastics
        RT  Paper
        ==========================================================
        -- Conservation and restoration

    Paper bookbindings USE Bookbinding -- Paper bindings

    Paper chemicals
        ==========================================================
        NT  Paper coatings -- Additives
        ==========================================================
        -- Deterioration
        -- Solubility

    Paper chemicals industry

    Paper chromotography
        ==========================================================
        BT  Chromatographic analysis
        ==========================================================
        -- Laboratory manuals

    Paper coatings
        ==========================================================
        BT  Paper
        Paper finishing
        ==========================================================
        -- Additives
              ====================================================
              BT  Paper chemicals
              ====================================================
        -- Permeability

    Paper coatings industry

    Paper-cutting machines
        ==========================================================
        BT  Printing machinery and supplies
        ==========================================================

    Paper electrophoresis
        ==========================================================
        BT  Electrophoresis
        ==========================================================

    Paper finishing
        ==========================================================
        BT  Papermaking
        NT  Paper coatings
        ==========================================================

    Paper industry
        ==========================================================
        NT  Paperboard industry
        ==========================================================

    Paper machine felts USE Papermaking machinery felts

    Paper machines USE Papermaking machinery

    Paper making and trade USE Paper industry
                           USE Papermaking

    Paper manufacture USE Papermaking

    Paper mills
        ==========================================================
        BT  Wood-pulp industry
        RT  Pulp mills
        ==========================================================

    Paper mulberry
        ==========================================================
        BT  Mulberry
        NOTE: This term refers to paper manufactured using the
              mulberry plant.
        ==========================================================

    Paper pressing USE Paper -- Pressing

    Paper sizing
        ==========================================================
        BT  Papermaking
        ==========================================================
        -- Solubility

    Paper stock preparation (Papermaking) USE Stock preparation
    (Papermaking)

    Paper substitutes

    Paper work

    Paperbacks -- Conservation and restoration
        ==========================================================
        RT  Bookbinding -- Paper bindings -- Conservation and
               restoration
        ==========================================================

    Paperboard
        -- Conservation and restoration

    Paperboard industry
        ==========================================================
        BT  Paper industry
        ==========================================================

    Papermaking
        ==========================================================
        BT  Paper
        NT  Dyes and dyeing -- Paper
            Paper finishing
            Paper sizing
            Stock preparation (Papermaking)
        ==========================================================
        -- Chemistry
        -- Equipment and supplies
              ====================================================
              NT  Papermaking machinery
              ====================================================

    Papermaking industry USE Paper industry

    Papermaking machinery
        ==========================================================
        BT  Papermaking -- Equipment and supplies
        ==========================================================
        -- Vibration

    Papermaking machinery felts

    Papyrus (The plant)
        ==========================================================
        RT  Manuscripts (Papyri)
        ==========================================================

    Papyrus manuscripts USE Manuscripts (Papyri)

    Parchment
        -- Conservation and restoration

    Particles
        ==========================================================
        NT  Dust
        ==========================================================

    Paste
        ==========================================================
        BT  Adhesives
        RT  Glue
        ==========================================================
        -- Deterioration
        -- Solubility

    Paste papers
        ==========================================================
        BT  Decorative paper
        RT  Marbling (Bookbinding)
        ==========================================================

    Pasteboard USE Paperboard

    Pastedowns
        ==========================================================
        BT  Bookbinding
            Endpapers
        ==========================================================
        -- Conservation and restoration

    Periodical selection
        ==========================================================
        BT  Collection development (Libraries)
        RT  Book selection
            Discarding of books, periodical, etc.
        ==========================================================

    Periodicals
        ==========================================================
        BT  Library materials
        RT  Newspapers
        ==========================================================
        -- Conservation and restoration
        -- Design
              ====================================================
              RT  Printing, Practical -- Layout
              ====================================================
        -- Format
        -- Selection USE Periodical selection

    Periodicals in microform
        ==========================================================
        BT  Microforms
        ==========================================================

    Periodicals on microfiche
        ==========================================================
        BT  Microfiche(s)
        ==========================================================

    Periodicals on microfilm
        ==========================================================
        BT  Microfilms
        ==========================================================

    Pest control USE Pests -- Control

    Pest management USE Pests -- Control

    Pesticide formulation USE Pesticides -- Formulation

    Pesticide industry USE Pesticides industry

    Pesticides
        ==========================================================
        NT  Aluminum phosphide
            Bactericides
            Fumigants
            Fungicides
            Insecticides
            Rodenticides
        RT  Insect pests -- Control
            Pests -- Control
        ==========================================================
        -- Application
        -- Biodegradation
        -- Controlled release
        -- Deterioration
        -- Environmental aspects
        -- Formulation
        -- Handbooks, manuals, etc.
        -- Law and legislation
        -- Physiological effect
        -- Safety measures
        -- Solubility
        -- Toxicology

    Pesticides, Biodegradable USE Pesticides -- Biodegradation

    Pesticides industry

    Pests
        ==========================================================
        NT  Household pests
            Insect pests
        ==========================================================
        -- Chemical control USE Pests -- Control
        -- Control
              ====================================================
              RT  Pesticides
              NOTE:  Individual pests may be described
                     separately, e.g., Termites -- Control.
              ====================================================
        -- Extermination USE Pests -- Control
        -- Management USE Pests -- Control

    pH USE Hydrogen-ion concentration

    PHOCUS (Information retrieval system)
        ==========================================================
        BT  Information storage and retrieval systems
        ==========================================================

    Photographs -- Conservation and restoration

    Phonocylinders -- Preservation and storage
        ==========================================================
        RT  Sound recordings -- Preservation and storage
        ==========================================================

    Phonodiscs USE Sound recordings

    Phonograph -- Preservation and storage
        ==========================================================
        NT  Kineto-phonograph -- Preservation and storage
        RT  Sound recordings -- Preservation and storage
        ==========================================================

    Phonograph records USE Sound recordings

    Phonotapes
        -- Copyright USE Copyright -- Phonotapes
        -- Preservation and storage
              ====================================================
              BT  Magnetic tapes -- Preservation and storage
                  Sound recordings -- Preservation and storage
              NT  Audiocassettes -- Preservation and storage
                  Talking books -- Preservation and storage
              ====================================================

    Photochemical oxidants
        ==========================================================
        BT  Oxidizing agents
        ==========================================================
        -- Environmental aspects

    Photochemical processes
        ==========================================================
        RT  Woodburytype
        ==========================================================

    Photochemistry
        ==========================================================
        NT  Diazo microfilm -- Effects of light on
        ==========================================================

    Photocopying processes
        ==========================================================
        BT  Copying processes
            Manuscripts -- Reproduction
            Photography -- Copying
            Photomechanical processes
        NT  Diazotype
            Electrostatic printing
            Electrophotography
            Maps -- Reproduction
            Photography -- Reproduction of plans, drawings, etc.
        ==========================================================

    Photocopying processes
        ==========================================================
        NT  Photostat
            Radiography -- Copying
            Reader-printers (Microphotography)
            Thermography (Copying process)
        RT  Xerography
        ==========================================================
        -- Dictionaries
        -- Fair use (Copyright)
              ====================================================
              BT  Fair use (Copyright)
              NT  Photocopying services in libraries
              ====================================================

    Photocopying services

    Photocopying services in libraries
        ==========================================================
        BT  Photocopying processes -- Fair use (Copyright)
            Photography -- Library applications
        RT  Copying processes
            Electrophotography -- Library applications
            Photostat -- Library applications
        ==========================================================

    Photoduplication USE Photocopying processes

    Photoelectronic devices
        ==========================================================
        NT  Electrophotography
            Imaging systems
        ==========================================================

    Photoengraving
        ==========================================================
        BT  Engraving
        NT  Photogalvanography
            Woodburytype
            Color photography -- Three-color process
        RT  Mezzograph
            Photomechanical processes
        ==========================================================

    Photoferroelectric effect
        ==========================================================
        BT  Images, Optical
            Imaging systems
            Optical storage devices
        ==========================================================

    Photogalvanography
        ==========================================================
        BT  Photoengraving
            Photomechanical processes
        ==========================================================

    Photoglyptie USE Woodburytype

    Photograph Conservation Universal Decimal Classification System
    (Information retrieval system) USE  PHOCUS (Information retrieval
    system)

    Photographic chemicals
        ==========================================================
        BT  Photography -- Apparatus and supplies
        NT  Color photography -- Developing and developers
            Photographic gelatin
            Photography -- Developing and developers
        ==========================================================

    Photographic chemicals industry

    Photographic chemistry
        ==========================================================
        NT  Photography -- Processing
        ==========================================================

    Photographic duplication USE Photomechanical processes

    Photographic emulsions
        ==========================================================
        BT  Emulsions
        RT  Photographic gelatin
        ==========================================================
        -- Deterioration
        -- Solubility

    Photographic film USE Photography -- Films

    Photographic gelatin
        ==========================================================
        BT  Gelatin
            Photographic chemicals
        RT  Photographic emulsions
        ==========================================================
        -- Deterioration
        -- Solubility

    Photographic papers USE Photography -- Printing papers

    Photographic papers, Color USE Color photography -- Printing papers

    Photographic optics
        ==========================================================
        RT  Light
        NT  Light filters
        ==========================================================

    Photographic processing USE Photography -- Processing

    Photographic reproduction processes USE Photocopying processes

    Photographic sensitometry
        ==========================================================
        NT  Color sensitometry (Photography)
            Photography -- Films
            Photography -- Plates
            Photography -- Printing papers
        ==========================================================

    Photographic slides USE Slides (Photography)

    Photographic wastes USE Photography -- Wastes, Recovery of

    Photographs
        ==========================================================
        NOTE:  Individual types of photographs may be described
               separately, e.g., "Ambrotype", "Daguerreotype", etc.
        ==========================================================
        -- Coloring
        -- Conservation and restoration
        -- Copyright USE Copyright -- Photographs
        -- Exhibitions USE Photography -- Exhibitions
        -- Trimming, mounting, etc.

    Photography
        ==========================================================
        NT  Color photography
            Electrophotography
            Photomechanical processes
        ==========================================================
        -- Apparatus and supplies
        ==========================================================
        NT  Photographic chemicals
            Photography -- Films
            Photography -- Printing papers
            Photography -- Plates
        ==========================================================
        -- Copying
              ====================================================
              NT  Photocopying processes
              ====================================================
        -- Developing and developers
              ====================================================
              BT  Photographic chemicals
              ====================================================
        -- Enlarging
        -- Exhibitions
        -- Films
              ====================================================
              BT  Photography -- Apparatus and supplies
                  Photographic sensitometry
              NT  Microfilms
                  Motion picture film
                  Safety film
              ====================================================
           -- Preservation and storage
        -- Formulae, tables, etc.
        -- Handbooks, manuals, etc.
        -- Library applications
              ====================================================
              NT  Photocopying services in libraries
              ====================================================
        -- Negatives
           -- Conservation and restoration
        -- Papers USE Photography -- Printing papers
        -- Plates
              ====================================================
              BT  Photographic sensitometry
                  Photography -- Apparatus and supplies
              ====================================================
           -- Conservation and restoration
        -- Printing papers
              ====================================================
              BT  Photography -- Apparatus and supplies
              NT  Albumen paper
                  Color photography -- Printing papers
              RT  Photographic sensitometry
              ====================================================
           -- Conservation and restoration
        -- Printing processes
              ====================================================
              NT  Color photography -- Printing processes
              ====================================================
        -- Processing
              ====================================================
              RT  Photographic chemistry
              NT  Color photography -- Processing
              ====================================================
        -- Reproduction of plans, drawings, etc.
              ====================================================
              RT  Photocopying processes
              ====================================================
        -- Sensitometry USE Photographic sensitometry
        -- Wastes, Recovery of

    Photography, Color USE Color photography

    Photogravure
        ==========================================================
        BT  Photomechanical processes
        RT  Engraving
        ==========================================================

    Photolithography
        ==========================================================
        BT  Lithography
            Photomechanical processes
        RT  Photoresists
        ==========================================================

    Photolysis (Chemistry) USE Photochemistry

    Photomechanical processes
        ==========================================================
        BT  Electrostatic printing
            Photography
        NT  Chemigraph
            Collotype
            Ferromagnetography
            Heliotype
            Mezzograph
        RT  Electrophotography
            Photocopying processes
            Photolithography
            Photoengraving
            Photogalvanography
            Photogravure
        ==========================================================
        -- Sample books

    Photometry
        ==========================================================
        RT  Light
            Light filters
            Optics
        ==========================================================

    Photoresists
        ==========================================================
        RT  Photolithography
        ==========================================================

    Photostat
        ==========================================================
        BT  Photocopying processes
        ==========================================================
        -- Conservation and restoration
        -- Library applications
              ====================================================
              RT  Photocopying services in libraries
              ====================================================

    Pictorial bookbindings USE Bookbinding -- Pictorial bindings

    Pigments
       =========================================================
       RT  Coloring matter
       NT  Dyes and dyeing
       =========================================================

    Plant fibers
       =========================================================
       BT  Fibers
       NT  Cellulose fibers
       RT  Kenaf
           Plant fibers
       =========================================================

    PLASDOC (Information retrieval system)
       =========================================================
       BT  Information storage and retrieval systems -- Polymers
              and polymerization
           Plastics industry and trade -- Information services
           Polymers and polymerization -- Information services
       =========================================================

    Plastic additives USE Plastics -- Additives

    Plastic film industry
       =========================================================
       BT  Plastic films
       =========================================================

    Plastic films
       =========================================================
       BT  Plastics
       NT  Polyester films
           Plastic film industry
       =========================================================
       -- Permeability

    Plastic packaging (Electronics) USE Electronic apparatus and
    appliances -- Plastic embedment

    Plastic paper USE Paper, Plastic

    Plasticity

    Plasticizers
       =========================================================
       BT  Plastics -- Additives
       RT  Solvents
       =========================================================

    Plastics
       =========================================================
       NT  Acetal resins
           Paper, Plastic
           Plastic films
           Polyesters
           Thermoplastics
       =========================================================
       -- Additives
             ===================================================
             NT  Plasticizers
             ===================================================
       -- Biodegradation
       -- Bonding
       -- Deterioration
       -- Welding
             ===================================================
             RT  Electronic apparatus and appliances --
                    Plastic embedment
             ===================================================

    Plastics additives USE Plastics -- Additives

    Plastics industry and trade
       -- Information services
             ===================================================
             NT  PLASDOC (Information retrieval system)
             ===================================================

    USE Porta

    Polyester fibers
       =========================================================
       BT  Textile fibers, Synthetic
       =========================================================

    Polyester films
       =========================================================
       BT  Plastic films
       =========================================================

    Polyester industry

    Polyesters
       =========================================================
       BT  Esters
           Gums and resins, Synthetic
           Plastics
           Polymers and polymerization
       NT  Textile fibers, Synthetic
       =========================================================
       -- Thermal properties

    Polymerization USE Polymers and polymerization

    Polymer melting

    Polymers and polymerization
       =========================================================
       NT  Acetal resins
           Biopolymers
           Emulsion polymerization
           Monomers
           Polyesters
       =========================================================
       -- Biodegradation
       -- Defects
       -- Deterioration
       -- Handbooks, manuals, etc.
       -- Information services
             NT  PLASDOC (Information retrieval system)
       -- Melting USE Polymer melting
       -- Optical properties
       -- Thermal properties
       -- Viscosity

    Polysaccharides
       =========================================================
       RT  Biopolymers
       =========================================================
       -- Synthesis

    Polyvinyl acetate USE Vinyl acetate

    Polyvinyl chloride
       =========================================================
       BT  Vinyl chloride polymers
       =========================================================

    Portas
       =========================================================
       BT  Bookbinding -- Specimens
       =========================================================

    Portiforia USE Portas

    Powder-post beetles USE Lyctidae

    Preservation and restoration
       =========================================================
       NOTE:  The subdivision "-- Conservation and restoration"
              may be used under types of art objects, books and
              manuscripts.
       =========================================================

    Preservation of art objects USE Art objects -- Conservation
    and restoration

    Preservation of books USE Books -- Conservation and
    restoration

    Preservation of cotton fabrics USE Cotton fabrics --
    Preservation

    Preservation of leather work USE Leather work -- Conservation
    and restoration

    Preservation of manuscripts USE Manuscripts -- Conservation
    and restoration

    Preservation of materials
       =========================================================
       NT  Library materials -- Conservation and restoration
       RT  Books -- Conservation and restoration
           Paper -- Preservation
       NOTE:  The subdivision "Preservation" is allowed under
              perishable products and antiquities, e.g.,
              "Buddhism -- Sacred books -- Preservation".
       =========================================================

    Preservation of microforms USE Microforms -- Preservation and
    storage

    Preservation of motion picture film USE Motion picture film
    -- Conservation and restoration

    Preservation of paper USE Paper -- Preservation

    Preservation of photographs USE Photographs -- Conservation
    and restoration

    Preservation of prints USE Prints -- Conservation and
    restoration

    Pressboard USE Paperboard

    Pressing of paper USE Paper -- Pressing

    Prevention of fires USE Fire prevention

    Print finishing process
       =========================================================
       NT  Bookbinding
       =========================================================

    Print making USE Prints -- Technique

    Printers

    Printing
       =========================================================
       NT  Offset printing
       =========================================================
       -- Exhibitions
             ===================================================
             RT  Bibliographical exhibitions
             ===================================================
       -- History

    Printing, Autotype process USE Autotype printing process

    Printing, Electrostatic USE Electrostatic printing

    Printing, Non-impact USE Non impact printing

    Printing, Offset USE Offset printing

    Printing, Practical
       =========================================================
       NT  Autotype process printing
           Color-printing
           Electrotyping
           Handpress
           Non impact printing
           Stereotyping
       =========================================================
       -- Imposition, etc.
             ===================================================
             NT  Margins in books
             ===================================================
       -- Layout
             ===================================================
             RT  Book design
                 Periodicals -- Design
             ===================================================
       -- Presswork
       -- Production standards
       -- Specimens USE Prints -- Specimens
       -- Style manuals

    Printing-ink
       =========================================================
       BT  Ink
       =========================================================

    Printing machinery and supplies
       =========================================================
       NT  Paper-cutting machines
       =========================================================

    Printmakers

    Prints
       =========================================================
       NT  Color prints
           Lithography
       =========================================================
       -- Conservation and restoration
       -- Materials
       -- Preservation USE Prints -- Conservation and restoration
       -- Restoration USE Prints -- Conservation and restoration
       -- Specimens
       -- Technique

    Prints, Color USE Color Prints

    Prints, Color (Photography) USE Color photography -- Printing
    processes

    Prints, Japanese -- Conservation and restoration

    Processing, Radiographic USE Radiography -- Processing

    Psychrometers USE Hygrometers

    Psychrometry USE Hygrometry

    Public domain (Copyright law)
       =========================================================
       BT  Copyright
       =========================================================

    Public records -- Conservation and restoration

    Publishers' bookbindings USE Bookbinding -- Publishers'
    bindings

    Pulp mills
       =========================================================
       BT  Wood-pulp industry
       RT  Paper mills
       =========================================================

    Pulping process, Mechanical USE Mechanical pulping process

    Pulping process, Soda USE Soda pulping process

    Pulping process, Sulphate USE Sulphate pulping process

    Pulping process, Sulphite USE Sulphite pulping process

    Purification of air USE Air -- Purification

    PVC (Chemical) USE Polyvinyl chloride

    Pyroxylin
       =========================================================
       BT  Cellulose
           Nitrocellulose
       =========================================================

    Quality of images on microfiches USE Microfiches -- Image
    quality

    Quality of images on microfilms USE Microfilms -- Image
    quality

    Quality of images on microforms USE Microforms -- Image
    quality

    Radiation sterilization of insects USE Insect
    radiosterilization

    Radiochemical analysis

    Radiochromatography
       =========================================================
       BT  Chromatographic analysis
       =========================================================

    Radiography
       =========================================================
       NT  Xeroradiography
       =========================================================
       -- Copying
       -- Films
       -- Processing

    Radiosterilization of insects USE Insect radiosterilization

    Rare books -- Conservation and restoration

    Rare books on microfilm
       =========================================================
       BT  Microfilms
       =========================================================

    Rat baits and repellents
       =========================================================
       BT  Repellents
       RT  Rodenticides
       =========================================================

    Rat repellents USE Rat baits and repellents

    Rats -- Control
       =========================================================
       BT  Rodents -- Control
       =========================================================

    Reader-printers (Microphotography)
       =========================================================
       BT  Microfilm projectors
           Microphotography -- Equipment and supplies
           Photocopying processes
       =========================================================

    Recording, Laser USE Laser recording

    Recordings, Sound USE Sound recordings

    Records
       -- Conservation
       -- Fires and fire prevention

    Records, Phonograph USE Sound recordings

    Refrigeration and refrigerating machinery
       =========================================================
       NT  Cold storage
           Cold storage lockers
           Freeze-drying
           Refrigerators
       =========================================================

    Refrigeration as a disinfectant
       =========================================================
       BT  Disinfection and disinfectants
       =========================================================

    Refrigerators
       =========================================================
       BT  Refrigeration and refrigeration machinery
       NT  Cold storage lockers
       =========================================================

    Relative humidity USE Humidity

    Renaissance bookbinding USE Bookbinding, Renaissance

    Repellents
       =========================================================
       NT  Insect baits and repellents
           Rat baits and repellents
       =========================================================

    Reprints (Publications) -- Catalogs
       =========================================================
       RT  Out-of-print books -- Catalogs
       =========================================================

    Reprints, Unauthorized USE Copyright -- Unauthorized reprints

    Reproduction of library materials USE Library materials --
    Reproduction

    Reproduction of maps USE Maps -- Reproduction

    Reproduction of water-marks USE Water-marks -- Reproduction

    Reproduction of works of art USE Art -- Reproduction

    Reproduction paper
       =========================================================
       BT  Copying processes
           Paper
       NOTE:  Subdivided as the term "Paper".
       =========================================================

    Reproduction processes USE Copying processes

    Reprographic services USE Copying services

    Reprography USE Copying processes

    Restoration of art objects USE Art objects -- Conservation
    and restoration

    Restoration of books USE Books -- Conservation and
    restoration

    Restoration of leather work USE Leather work -- Conservation
    and restoration

    Restoration of manuscripts USE Manuscripts -- Conservation
    and restoration

    Restoration of photographs USE Photographs -- Conservation
    and restoration

    Restoration of prints USE Prints -- Conservation and
    restoration

    Restorers, Art USE Art restorers

    (Rice paper)  NOTE:  This term is not a valid Library of
    Congress subject heading.  No expression currently exists to
    describe this horizontal plant shaving cum writing surface.
    It is not to be confused with "Japanese paper".  Cf, note
    under "Japanese paper."

    Rodent control USE Rodents -- Control

    Rodentia USE Rodents

    Rodenticides
       =========================================================
       BT  Pesticides
           Rodents -- Control
       NT  Rat baits and repellents
       =========================================================
       -- Law and legislation

    Rodents
       -- Control
             ===================================================
             NT  Mice -- Control
                 Rats -- Control
                 Rodenticides
             ===================================================

    Rotograph USE Photostat

    Safety film
       =========================================================
       BT  Photography -- Films
       =========================================================
       -- Law and legislation
       -- Preservation and storage
       -- Standards
       -- Testing

    Scanning systems
       =========================================================
       RT  Imaging systems
       =========================================================

    Scrolls -- Conservation and restoration

    Sensitive paper, Light USE Light sensitive paper

    Sensitometry, Photographic USE Photographic sensitometry

    Shelf department (Library science) USE Libraries -- Shelf
    department

    Shelving for books
       =========================================================
       NT  Bookcases
       =========================================================

    Shelving for non-book materials

    Shelving for periodicals

    Shelving for music

    Shelving for sound recordings

    Silver bookbindings USE Bookbinding -- Silver bindings

    Silverfish (Insect)
       =========================================================
       BT  Insect pests
           Lepisma
       =========================================================
       -- Control

    Sizing of paper USE Paper sizing

    Skins USE Hides and skins

    Slides (Photography)
       =========================================================
       BT  Audio-visual materials
           Photographs
           Transparencies
       =========================================================
       -- Conservation and restoration
       -- Copying

    Slides (Transparencies) USE Slides (Photography)

    Sling psychrometers USE Hygrometers

    Soda pulping process
       =========================================================
       BT  Wood-pulp
       =========================================================

    Solvents
       =========================================================
       RT  Plasticizers
       =========================================================

    Sound recordings
       =========================================================
       BT  Audio-visual materials
       NT  Phonotapes
           Talking books
           Talking newspapers
       RT  Phonograph
       =========================================================
       -- Copyright USE Copyright -- Sound recordings
       -- Preservation and storage
       -- Sound recordings -- Unauthorized reproductions USE
             Copyright -- Unauthorized reproductions of sound
             recordings

    Spines, Books USE Book spines

    Splicing (Motion picture film) USE Motion picture film --
    Splicing

    Sprinkling systems USE Fire sprinklers

    Stacks (for books) USE Shelving (for books)

    Stains and staining (Microscopy)

    Stamped bookbindings USE Bookbinding -- Stamped bindings

    Starch
       =========================================================
       RT  Glucans
       =========================================================

    Steel-engraving USE Engraving

    Stereotyping
       =========================================================
       BT  Printing, Practical
       RT  Electrotyping
       =========================================================

    Sterilization of insects USE Insect sterilization

    Stock preparation (Papermaking)
       =========================================================
       BT  Papermaking
       NT  Wood-pulp -- Refining
       =========================================================

    Storage libraries USE Libraries, Storage

    Storage of microforms USE Microforms -- Preservation and
    storage

    Sulphate process USE Sulphate pulping process

    Sulphate pulping process
       =========================================================
       BT  Wood-pulp
       =========================================================

    Sulphate waste liquor
       =========================================================
       BT  Wood-pulp industry -- By-products
       =========================================================

    Sulphite pulping process
       =========================================================
       BT  Wood-pulp
       =========================================================

    Sulphur dioxide
       -- Physiological effect

    Surveys
       =========================================================
       NT  Library surveys
       =========================================================

    Synthetic fibers USE Textile fibers, Synthetic

    Talking books -- Preservation and storage
       =========================================================
       BT  Phonotapes -- Preservation and storage
           Sound recordings -- Preservation and storage
       =========================================================

    Talking newspapers -- Preservation and storage
       =========================================================
       BT  Sound recordings -- Preservation and storage
       =========================================================

    Tanning
       =========================================================
       NT  Morocco leather
       RT  Hides and skins
           Leather
       =========================================================

    Tape recordings (Sound reproductions) USE Phonotapes

    Tapes USE Phonotapes

    Termites
       =========================================================
       BT  Insect pests
       NT  Hodotermitidae
       RT  Termitomyces
       =========================================================
       -- Control

    Termitomyces
       =========================================================
       BT  Insect pests
       RT  Termites
       =========================================================
       -- Control

    Textile chemicals
       =========================================================
       NT  Dyes and dyeing -- Textile fibers
           Fillers (in paper, paint, etc.)
       =========================================================

    Textile chemistry
       =========================================================
       BT  Dyes and dyeing -- Chemistry
       =========================================================

    Textile fabric
       =========================================================
       NT  Cotton fabrics
       =========================================================
       -- Analysis USE Textile chemistry
       -- Conservation and restoration
       -- Moisture USE Moisture in textiles
       -- Research USE Textile research

    Textile fibers
       =========================================================
       BT  Fibers
       RT  Cotton
           Plant fibers
       =========================================================
       -- Dyeing USE Dyes and dyeing -- Textile fibers

    Textile fibers, Synthetic
       =========================================================
       BT  Polyesters
       NT  Polyester fibers
       =========================================================

    Textile industry
       -- Research USE Textile research

    Textile research

    Textiles USE Textile fabrics

    Textiles, Moisture in USE Moisture in textiles

    Thermal reproductive processes USE Thermography (Copying
    process)

    Thermobia
       =========================================================
       NT  Firebrat
       =========================================================

    Thermobia domestica USE Firebrat

    Thermographic copying processes USE Thermography (Copying
    processes)

    Thermographic paper
       =========================================================
       BT  Paper
       NOTE:  Subdivided as the term "Paper".
       =========================================================

    Thermography (Copying process)
       =========================================================
       BT  Copying processes
           Photocopying processes
       =========================================================
       -- Papers USE Thermographic paper

    Thermometers, Wet-bulb USE Wet-bulb thermometers

    Thermoplastics
       =========================================================
       BT  Gums and resins, Synthetic
           Plastics
       NT  Adhesives, Hot melt
       =========================================================
       -- Brittleness
       -- Welding

    Thread
       =========================================================
       BT  Fibers
       =========================================================

    Three-color process USE Color photography -- Three-color
    process

    Tintype -- Conservation and restoration
       =========================================================
       BT  Photographs -- Conservation and restoration
       =========================================================

    Tissue paper
       =========================================================
       BT  Paper
       RT  Japanese paper
       NOTE:  Subdivided as the term "Paper".
       =========================================================

    Toners (Xerography)
       =========================================================
       BT  Xerography -- Equipment and supplies
       =========================================================

    Toners (Xerography) industry
       =========================================================
       BT  Copying machine equipment industry
       =========================================================

    Transparencies
       =========================================================
       BT  Audio-visual materials
       NT  Slides (Photography)
       =========================================================
       -- Coloring
       -- Conservation and restoration
       -- Trimming, mounting, etc.

    Vellum USE Parchment

    Vellum printed books
       -- Conservation and restoration
       -- Exhibitions

    Vermin USE Household pests

    Victorian bookbinding USE Bookbinding, Victorian

    Video cassettes USE Videocassettes

    Video discs

    Video disc players

    Video recordings
       -- Fair use (Copyright)
             ===================================================
                 BT  Fair use (Copyright)
             ===================================================

    Video recordings
       -- Preservation and storage
       -- Unauthorized reproductions USE Copyright --
             Unauthorized reproductions of video recordings

    Video tape recorders and recording
       =========================================================
       BT  Magnetic recorders and recording
       =========================================================
       -- Fair use (Copyright) USE Video recordings -- Fair use
             (Copyright)
       -- Handbooks, manuals, etc.

    Video tapes -- Preservation and storage
       =========================================================
       BT  Magnetic tapes -- Preservation and storage
       =========================================================

    Videocassettes -- Preservation and storage

    Vinyl acetate
       =========================================================
       BT  Vinyl polymers
       =========================================================

    Vinyl chloride polymer
       =========================================================
       NT  Polyvinyl chloride
       =========================================================

    Vinyl ethers
       =========================================================
       BT  Ethers
       =========================================================

    Vinyl polymers
       =========================================================
       NT  Vinyl acetate
       =========================================================

    Warning systems, Fire USE Fire-alarms

    Waste liquor, Sulphate USE Sulphate waste liquor

    Waste paper
       =========================================================
       BT  Paper
       NOTE:  Subdivided as the term "Paper".
       =========================================================

    Water
       -- Electrolysis
             ===================================================
             RT  Hydrogen-ion concentration
             ===================================================

    Water-marks
       =========================================================
       BT  Paper
       =========================================================
       -- Exhibitions
       -- Reproduction

    Water vapor, Atmospheric
       =========================================================
       BT  Moisture
       RT  Humidity
       =========================================================

    Weeding (Books) USE Discarding of books, periodicals, etc.

    Weeding (Manuscripts) USE Discarding of manuscripts, etc.

    Wet-bulb thermometers
       =========================================================
       BT  Hygrometers
       =========================================================

    White ants USE Termites

    Whiteprint USE Diazotype

    Women bookbinders
       =========================================================
       BT  Bookbinders
       =========================================================

    Wood -- Chemistry
       =========================================================
       RT  Cellulose
           Lignin
       =========================================================

    Wood-pulp
       =========================================================
       NT  Mechanical pulping process
           Newsprint
           Soda pulping process
           Sulphate pulping process
           Sulphite pulping process
       =========================================================
       -- Beating USE Wood-pulp -- Refining

    Wood-pulp
       -- Bleaching
             ===================================================
             BT  Bleaching
             ===================================================
       -- Microbiology
       -- Refining
             ===================================================
             BT  Stock preparation (Papermaking)
             ===================================================

    Wood-pulp industry
       =========================================================
       NT  Paper mills
           Pulp mills
       =========================================================
       -- By-products
             ===================================================
             NT  Sulphate waste liquor
             ===================================================
       -- Equipment and supplies
             ===================================================
             NT  Defibrators
             ===================================================

    Wood-pulp mills USE Pulp mills

    Woodburytype
       =========================================================
       BT  Photoengraving
       RT  Photochemical processes
       =========================================================

    Writing -- Materials and instruments
       =========================================================
       NT  Ink
           Manuscripts (Papyri)
           Paper
       =========================================================

    Xerographic art USE Copy art

    Xerography
       =========================================================
       BT  Copying processes
           Electrostatic printing
       RT  Photocopying processes
       =========================================================
       -- Developing and developers
       -- Equipment and supplies
             NT Toners (Xerography)
       -- Library applications USE Photocopying services in
             libraries

    Xeroradiography
       =========================================================
       BT  Radiography
       =========================================================

    Xestobium
       =========================================================
       BT  Anobiidae
           Insect pests
       NT  Xestobium rufovillosum
       =========================================================
       -- Control

    Xestobium rufovillosum
       =========================================================
       BT  Insect pests
           Xestobium
       =========================================================
       -- Control

    Xestobium tesselatum USE Xestobium rufovillosum

    Xyletinidae USE Anobiidae

Erich J. Kesse.
Preservation Office.
University of Florida Libraries.
904.392.6962. Fax: 904.392.7251.

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URL: http://cool.conservation-us.org/lex/kessecls/ir-lcsh1.html
Timestamp: Thursday, 17-Jun-2010 13:01:15 PDT
Retrieved: Friday, 15-Dec-2017 18:04:49 GMT