Keller, Edward A. <br/><br/>
Environmental geology / 
by Edward Keller with assistance from E.M . Burt. 
 - Columbus :  Merrill,  1976. 
 - viii,488 p. :  ill.(some col.) ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0675086175 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental geology.
<br/><br/><label>Dewey Class. No.: </label>304.2