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2. C. H. Boatner, C. M. Hall, R. T. O'Connor, L. E. Castillon, and M. C. Curet, J. Am. Oil. Chem. Soc.,24, 97 (1947).
3. A. L. Markman and V. P. Rzhekhin, Gossypol and Its Derivatives [in Russian], Moscow (1965), p. 80.
4. Handbook on Methods of Investigation, Technical and Chemical Control, and the Accounting of Production in the Oil and Fats Industry [in Russian], Leningrad, Vol. VI, No. II (1974), p. 42.
5. Handbook on Methods of Investigation, Technical and Chemical Control and the Accounting of Production in the Oil and Fats Industry [in Russian], Leningrad, Vol. I, Book 2 (1967), p. 830.