Proceedings of a workshop on soil fertility research for bean cropping system in Africa 
/ Centro International de Agricultura Tropical 
. - Addis Abeba  : Network on bean research in Africa, 1988
. - 224 p.  : ill.,couv.ill.  ; 30 cm. 
 - CIAT Africa Workshop series  3 .
<br/><br/><label>Source: </label> don 
<br/><br/><label>Universal Decimal Class. No.: </label>635.652.