Ruthenberg, H.  <br/><br/>
Farming systems in the tropics  (Book) 

 - 2nd ed. 
 - Oxford  Clarendon Press  1976 
 - 366 p.  24 cm. 
<br/><br/><label>ISBN: </label>0198594585 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Tropics Farm management--Tropics
<br/><br/><label>Universal Decimal Class. No.: </label>631.58 (213) RUT  / 6719