Sustainable agricultural systems / 

 - Ankeny, Iowa :  Soil and Water Conservation Society,  c1990. 
 - xvi, 696 p. :  ill., maps ;  24 cm. 
<br/><br/> "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. 
<br/><br/><label>ISBN: </label>093573421X : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sustainable agriculture.<br/>Agricultural systems.
<br/><br/><label>Dewey Class. No.: </label>338 SOI 1990 A068 Or.