NORMAN,David W <br/><br/>
Farming systems in the Nigerian savanna:Research and strategies for development 

 -  Boulder. Westview press  1982 
 - xxiv,276p; 
<br/><br/><label>ISBN: </label>0-86531-925-1 
<br/><br/><label>Dewey Class. No.: </label>338.109669