Ruthenberg, Hans. <br/><br/>
Farming systems in the tropics/ 
Hans Ruthenberg 
 - Oxford :  Clarendon Press,   1971. 
 - xiv, 313 p. :  ill. ,   24 cm. 
<br/><br/>Includes bibliographical references (p. [287]-302). 
<br/><br/><label>ISBN: </label>0198594267 
<br/><br/><label>LCCN: </label>75-888971 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Tropics.<br/>Farm management--Tropics.
<br/><br/><label>Dewey Class. No.: </label>630.913