Number | Date | Country | Kind |
---|---|---|---|
196 32 865 | Aug 1996 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4547263 | Quame | Oct 1985 |
Entry |
---|
Casey, James, P., Pulp and Paper Chemistry and Chemical Technology, vol. 1 (New York: John Wiley & Sons) 548,1980. |
Smook, G.A., Handbook of Pulp & Paper Terminology (Vancouver: Angus Wilde Publications), 152, 1990. |