Hans Ruthenberg <br/><br/>
Farming systems in the tropics. Ed 3 

 - 3rd Edition 
 - Oxford  Clarendon Press  1980 
 - 424p 
<br/><br/>Hans Ruthenberg: Farming systems in the tropics. Ed 3.  (3rd Edition)  Oxford.  Clarendon Press, 1980. 0-19-85948-X--(630.913RUT)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-19-85948-X 
<br/><br/><label>Dewey Class. No.: </label>630.913  / RUT