Upton, Martin  . <br/><br/>
Economic of tropical farming systems /  
by Martin Upton. 
 - Cambridge :   Cambridge University Press ,   1996 
 - 374p :  
<br/><br/><label>ISBN: </label>0-521-63511-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tropical farming
<br/><br/><label>Dewey Class. No.: </label>X8(J)  / N6