Upton, Martin. <br/><br/>
The economics of tropical farming systems / 
Martin Upton. 
 - Cambridge ;  New York :  Cambridge University Press,  1997. 
 - xiv, 374 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>052163511x 0521482895 (hardback) 0521483409 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects--Africa.<br/>Agriculture--Economic aspects--Tropics.
<br/><br/><label>Dewey Class. No.: </label>338.10913  / UPE 1997