TY  - BOOK
AU  - Edwards,C.A.
ED  - United States 
ED  -  International Conference on Sustainable Agricultural Systems 
TI  - Sustainable agricultural systems / 
SN  - 093573421X
U1  - 338.162 
PY  - 1990///
CY  - Ankeny, Iowa : 
PB  - Soil and Water Conservation Society, 
KW  - Sustainable agriculture
KW  - Agricultural systems
N1  -  "Proceedings of the International Conference on Sustainable Agricult ural 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 and index
ER  -