WRIGLEY, Gordon. <br/><br/>
Tropical Agriculture : The development of Production. 

 - 4th edi. 
 - London.  Longman.  1981 
 - xv, 496p. 
<br/><br/><label>ISBN: </label>0 582 46037 9 
<br/><br/><label>Dewey Class. No.: </label>630.913