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2. Bailey, L. H., “Manual of Cultivated Plants,” The Macmillan Company, New York, N. Y., 1949.
3. Eckey, E. W., “Vegetable Fats and Oils,” Reinhold Publishing Corporation, New York, N. Y., 1954.
4. Sharapov, N. L., “New Fatty Oil Plants,” Publ. Acad. Sci., USSR, 1956.
5. Hilditch, T. P., “The Chemical Constitution of Natural Fats,” 3rd ed., John Wiley and Sons Inc., New York, N. Y., 1956.