editors, Judith B. St. John, Elliott Berlin, Patricia C. Jackson ; organized by the BARC Symposium IX Committee ; sponsored by the Beltsville Agricultural Research Center
Patricia C. Augustine, Harry D. Danforth, Murray R. Bakst, editors ; organized by the BARC Symposium X Committee ; sponsored by the Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture
organized by the BARC Symposium XI Committee ; sponsored by the Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture ; Gary R. Beecher, editor