1. USDA, ARS Report and Recommendations of the Human Nutrition and Consumer Use Research Advisory Committee, 809, (1967).
2. Technical Manual of the American Association of Textile Chemists and Colorists.44 B 109 (1968).
3. Francis L. Bonner, Personal Communication, Feed & Fertilizer Laboratory, Louisiana State University, 1967.
4. W. A. Bosin, Analytical Chemistry 35, 833–837, (1965).
5. K. D. Roeder. Insect Physiology. Chap. 2, Chemical and Physical Properties of Cuticle, pp. 23–25 (1953), John Wiley and Sons, Inc. New York, N. Y.