Changing agricultural opportunities: the role of farming systems approaches 

 - Sri Lanka  1998  Asian Farming System Association 
 - 477 p. 
<br/><br/><label>ISBN: </label>9558219002 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Farming system
<br/><br/><label>Dewey Class. No.: </label>630  / C362 1998