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

 - 4th ed. 
 - New Delhi  CBS  1985 
 - 480p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology-Environmental aspects
<br/><br/><label>Dewey Class. No.: </label>551 KEL 4th ed.