Biotic diversity and germplasm preservation, global imperatives : invited papers presented at a symposium held May 9-11, 1988, at the Beltsville Agricultural Research Center, Beltsville, Maryland

Section I: Introduction and Delineation of Issues.- Systematics, Diversity, and Germplasm.- Germplasm Preservation: Objectives and Needs.- Ethical and Policy Implications.- Ecology of Agroecosystems in Relation to Natural Ecosystems.- Section II: Basic Research and Germplasm Status.- Plant Germplasm Preservation: A Global Perspective.- Program for Plant Germplasm Preservation in the United states.…