Keller, Edward A.   x  <br/><br/>
Environmental geology   x 

 - 2nd ed.  
 - Columbus   Charles E. Merrill   1979  
 - xii, 548p.  
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>x  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology  Earth  
<br/><br/><label>Dewey Class. No.: </label>550/KEE