Dryland farming in Africa 
/ éd. by J.R.J. Rawland, ... 
. - Wageningen  : CTA, 1993
. - xii-336 P.  : ill., couv. ill. en coul.  ; 25 cm. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0333476549 9780333476543 
<br/><br/><label>Universal Decimal Class. No.: </label>630.