Number | Date | Country | Kind |
---|---|---|---|
605195 | Jul 1989 | CAX |
Number | Name | Date | Kind |
---|---|---|---|
4498955 | Nelson | Feb 1985 |
Entry |
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A. W. Pesch, "Substitutes for Salt Cake and Sulphur in the Kraft Pulping Process", TAPPI, 39 (6), p. 353 (1956). |
J. N. Swartz, R. C. MacDonald & P. C. Hambaugh, "Kraft Liquor Sulphidity Control with Sulphuric Acid", TAPPI, 43(5) p. 499 (1960). |