1. U.S. Congress, Office of Technology Assessment. 1987. Technologies to Maintain Biological Diversity. U.S. Government Printing Office, Washington, DC. 344 pp.
2. U.S. Department of State. 1982. Proceedings of the U.S. Strategy Conference on Biological Diversity. Department of State Publ. 9262. U.S. Department of State, Washington, DC. 125 pp.
3. American Phytopathology Society. 1981. National Work Conference on Microbial Collections of Major Importance to Agriculture. Am. Phytopathol. Soc, St. Paul, MN. 52 pp.
4. U.S. Congress, Office of Technology Assessment. 1984. Commercial Biotechnology, an International Analysis. U.S. Government Printing Office, Washington, DC. 612 pp.
5. National Academy of Sciences. 1979. Microbial Processes: Promising Technologies for Developing Countries. Nat. Res. Council, Washington, DC. 198 pp.