Edwards, Clive A.  <br/><br/>
Sustainable agricultural systems 

 - Lowa  Soil and Water Conservation Society  1990 
 - xvi,696p.  23cm 
<br/><br/><label>ISBN: </label>093573421x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural Systems<br/>Sustainable Agriculture
<br/><br/><label>Dewey Class. No.: </label>338.162  / SUS