Towards Sustainable farming systems in sub- Sharan Africa  
T,Bezuneh, S,Duedkaogo,J.M,Menyonga, J,Zongo and M,Ouedkaogo 
 - Quagadougou  AAFSRET/OAU/STRC-SAFGRAD  1998 
 - xxv,582p;  Hbk  
<br/><br/><label>ISBN: </label>9782453390 
<br/><br/><label>LC Class. No.: </label>SB441.T69 1998