Allan, J.A. <br/><br/>
The Sahara ecological change and early economic history 
J.A. Allan. 
 - Cambridge  Middle East and North African Studies Press  1981 
 - xii, 145p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Climatic changes - Sahara<br/>Sahara - Economic conditions.
<br/><br/><label>Dewey Class. No.: </label>966  / A36S