Cunningham <br/><br/>
Environmental Science a global concern  - 
William P.Cunningham	 
 - 4 
 - Boston	 		  WCB McGraw-Hill	  1997 
 - 634 
<br/><br/><label>ISBN: </label>697286711					 
<br/><br/><label>Dewey Class. No.: </label>352.6	  / CUN