Quennell A M Ed. <br/><br/>
Rift valleys 

 - Stroudsburg  Hutchinson ross          1982 
 - xiii,419p.  cm. 
 - Benchmark papers in geology; 60 .
<br/><br/><label>Standard No.: </label>46702 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> African geology<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H.6.g1, M2