ENGER, Eldon D. <br/><br/>
Environmental Science 

 - 7th ed 
 - Boston  McGraw - Hill Companies, Inc  2000 
 - xxi, 434p. 
<br/><br/><label>ISBN: </label>0-07-230495-2 
<br/><br/><label>Dewey Class. No.: </label>333.7