Williams, Martin A. J. <br/><br/>
The Sahara and the line: quarternary environments and prehestoric occupation in Northern Africa 

 - Rotterdam  Balkema  1980 
 - xvi,607p.  23cm. 
<br/><br/><label>ISBN: </label>9061910129 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>LC Class. No.: </label>QE696.S14