Agricultural change in tropical Africa / 
Kenneth R. M. Anthony ... [et al.] 
 - Ithaca, N.Y. :  Cornell University Press,  1979 
 - 326 p. :  ill. ;  24 cm. 
<br/><br/> Includes indexes 
<br/><br/>Bibliography : p. 300 -312 
<br/><br/><label>ISBN: </label>0801411599 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Africa, Sub-Saharan<br/>Agricultural innovations--Africa, Sub-Saharan<br/>Agriculture--Economic aspects--Africa, Sub-Saharan<br/>Agricultural productivity--Africa, Sub-Saharan<br/>Agricultural research--Africa, Sub-Saharan