Fosbrooke, H. A. <br/><br/>
Socio-economic aspects of different cropping systems 
H. A. Fosbrooke 
 -  : Addis Ababa,   1975. 
 - 29-34p.  ; 30cm. 
<br/><br/>Includes references 
<br/><br/><label>LC Class. No.: </label>EAF FOS F78.S69