1. American Oil Chemists' Society,Official and Tentative Methods, Revised 1943.
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3. Bailey, A. E., and Feuge, R. O., Ind. Eng. Chem. Anal. Ed.15, 280–81 (1943).
4. Christense, C. W. (to Armour & Co.), U. S. Pat. 2,022,493 (1935).
5. Eckey, E. W., and Clark, C. C. (to Procter & Gamble Co.), U. S. Pat. 2,065,520 (1936).