Norman, David W. <br/><br/>
Farm and village production systems in the semi-arid tropics of west Africa ; an interpretative review of research 

 - Patancheru :  International Crops Institute for the Semi-Arid Tropics,  1981 
 - 94 p.  ; gráfs. 
 - Research bulletin  ; 4 (1) .
 - Research bulletin  ; 4 (1) .
<br/><br/><label>LCCN: </label>32796 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Trópicos.<br/>Sistemas de cultivo--Trópicos.
<br/><br/><label>Dewey Class. No.: </label>631.5  / N6