Technology for small-scale farmers in sub-Saharan Africa :  experience with food crop production in five major ecological zones / 
Stephen J. Carr. 
 - Washington, D.C. :  World Bank,  c1989. 
 - xiii, 106 p. 
 - World Bank technical paper,  no. 109  0253-7494 ; .
<br/><br/><label>ISBN: </label>082131355X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Appropriate technology.--Africa, Sub-Saharan<br/>Agriculture--Technology transfer.--Africa, Sub-Saharan<br/>Food crops--Africa, Sub-Saharan.<br/>Agricultural development projects--Africa, Sub-Saharan.<br/>Farms, Small--Africa, Sub-Saharan.<br/>Agricultural extension work--Africa, Sub-Saharan.<br/>Agriculture--Research--Africa, Sub-Saharan.<br/>Agricultural ecology--Africa, Sub-Saharan.