Crop improvement, adoption, and impact of improved varieties in food crops in sub-saharan Africa / 
edited by Thomas S. Walker and Jeffrey Alwang. 
 - Oxfordshire ;  Boston, MA :  CGIAR and CAB International,  2015. 
 - xxviii, 450 p. :  ill., maps ;  25 cm. 
<br/><br/>Includes bibliographical references and index (p.437-450) 
<br/><br/><label>ISBN: </label>9781780644011 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural productivity--Africa, Sub-Saharan.<br/>Agriculture--Research--Africa, Sub-Saharan.<br/>Crop improvement--Africa, Sub-Saharan.<br/>Food crops--breeding--Africa, Sub-Saharan.