The Sahel: Ecological approaches to land use 
[by] UNESCO 
 - Paris,  UNESCO,  1975. 
 - 99p. 
<br/><br/><label>ISBN: </label>9231012371 
<br/><br/><label>Subjects--Topical Terms: </label>--School of Engineering and Technology
<br/><br/><label>LC Class. No.: </label>S 601  / .U54 1975