Ruthenberg, Hans <br/><br/>
Farming systems in the tropics/ 
Hans Ruthenberg, with contributions by J. D. MacArthur, H. D. Zandstra, and M. P. Collinson 
 - 3rd ed. 
 - Oxford  Clarendon Press  1980 
 - xxi, 424 p.:  ill.; Pbk 
<br/><br/><label>ISBN: </label>0198594828 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Tropics.<br/>Farm management--Tropics.
<br/><br/><label>LC Class. No.: </label>S604.37.R87 1980 
<br/><br/><label>Dewey Class. No.: </label>630/.913