Sustainable agricultural systems /
Edwards, C. A.(Clive Arthur),1925-
United States.Agency for International Development.
International Conference on Sustainable Agricultural Systems(1988 :Ohio State University)
Ankeny, Iowa : Soil and Water Conservation Society,
c1990.
"Proceedings of the International Conference on Sustainable Agricultural Systems that was held at Ohio State University, Columbus, Ohio, in September 1988 ... [under the] sponsorship of USAID ... [et al.]"--P. xiv.
Includes bibliographical references.

Sustainable agriculture.
Agricultural systems.