1. Salzberg, H. K., Casein Glues and Adhesives, in “Handbook of Adhesives,” 2nd Ed., I. Skeist, ed., Chapter 9, p. 159, New York, Van Nostrand Reinhold Co., 1977.
2. Lambuth, Alan, Blood Glues, in “Handbook of Adhesives,” 2nd Edition, I. Skeist, ed., Chapter 11, p. 181, New York, Van Nostrand Reinhold Co., 1977.
3. Lambuth, Alan, Soybean Glues, in “Handbook of Adhesives,” 2nd Ed., I. Skeist, ed., Chapter 10, pp. 172–173, New York, Van Nostrand Reinhold Co., 1977.
4. C.A.A.C., 214 Massachusetts Ave., NE, Suite 520, Washington, DC 20002.
5. Special Foreign Trade Statistics Report, U.S. General Imports, 1985, TSUSA Commodity Number 493.1200, “Casein.”