Ruthenberg, Hans.  <br/><br/>
Farming Systems in the Tropics  

 - Oxford   Clarendon Press  1971 
<br/><br/><label>ISBN: </label>978-01-9859426-0 
<br/><br/><label>Source: </label>Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>African StudiesPolitical Science