Cunningham P. William/ <br/><br/>
Environmental Science 
William P. Cunningha 
 - 8th ed 
 - New york  Higher education  c1997 
 - 600P 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0072439564 
<br/><br/><label>Dewey Class. No.: </label>363.7CUN