Periodicity refers to the number of parts into which the document is divided and the manner or sequence in which those parts are or have been published.
A Monograph is a published work, collection, or other document that is not a serial (1.3.2).
A Serial is a publication issued in successive parts, bearing numerical or chronological designations, at regular or irregular intervals and intended to continue indefinitely.
Timestamp: Sunday, 23-Nov-2008 15:20:17 PST
Retrieved: Sunday, 18-Nov-2018 16:59:19 GMT