Sinnadurai, Supplah <br/><br/>
Cropping systems in Africa 

 - Legon  University of Ghana  1975 
 - 4p.  33cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cropping systems
<br/><br/><label>LC Class. No.: </label>FOS S5.C7