Cox, Dennis P. <br/><br/>
Geology  principles and concepts 
Dennis P. Cox, Helen R. Cox 
 - San Francisco  W. H. Freeman  1974 
 - 463 p. : ill. ; 21 cm. 
<br/><br/><label>ISBN: </label>0716702622 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology