Number | Name | Date | Kind |
---|---|---|---|
56682 | Wright | Jul 1866 | |
745340 | Foley | Dec 1903 | |
4366752 | Koski | Jan 1983 | |
4375188 | Leiviska | Mar 1983 | |
4534829 | Ahrweiler | Aug 1985 |
Number | Date | Country |
---|---|---|
27621 | Apr 1981 | EPX |
960933 | Jun 1964 | GBX |
Entry |
---|
Calkin, "Modern Pulp and Paper Making", 1957, pp. 312-313. |