![[CoOL]](/icons/sm_cool.gif){kind=icon}
URL: http://cool.conservation-us.org/don/fn/fn67.html
Timestamp: Thursday, 10-Mar-2011 17:22:26 PST
Retrieved: Saturday, 25-May-2013 01:51:01 GMT
" Calkin, John Burgess. Modern pulp and paper making. 3rd ed. New York. Reinhold. 1957.
URL: http://cool.conservation-us.org/don/fn/fn67.html
Timestamp: Thursday, 10-Mar-2011 17:22:26 PST
Retrieved: Saturday, 25-May-2013 01:51:01 GMT