convener and editor, H. D. Tindall; Temperate zone fruits in the tropics and subtropics / convener and editor, F. G. Dennis; Symposium on Horticultural Economics in Developing Countries, Alemaya, Ethiopia, July 1989 / convener and editor R. von Alvensleben
Committee on International Soil and Water Research and Development ; Water Science and Technology Board, Commission on Engineering and Technical Systems ; Board on Science and Technology for International Development, Office of International Affairs, National Research Council