Symposium Biotic Diversity and Germplasm Preservation, G. I. B., The Beltsville Agricultural Research Center, Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture with the cooperation of Friends of Agricultural Research Beltsville, I., Assistance of Committee on Managing Global Genetic Resources, B. o. A., . . . Stoner, A. K. (1989). Papers. Países bajos: Kluwer Academic Publishers.

Symposium Biotic Diversity and Germplasm Preservation, Global Imperatives Beltsville, The Beltsville Agricultural Research Center, Agricultural Research Center, Agricultural Research Service, Inc United States Department of Agriculture with the cooperation of Friends of Agricultural Research Beltsville, Board on Agriculture Assistance of Committee on Managing Global Genetic Resources, National Research Council, Lloyd V. Knutson, and Allan K. Stoner. Papers. Países bajos: Kluwer Academic Publishers, 1989.

Symposium Biotic Diversity and Germplasm Preservation, Global Imperatives Beltsville, et al. Papers. Países bajos: Kluwer Academic Publishers, 1989.