Keller, Edward A.,   1942- <br/><br/>
Environmental geology / 
Edward A. Keller ; with assistance from E .M. Burt. 
 - 5th ed. 
 - Columbus :  Merrill Publishing,  c1988. 
 - xiii, 540 p. :  ill. (some col.). maps ;  29 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental geology.
<br/><br/><label>Dewey Class. No.: </label>304.2 KEL