Cunningham , William P. <br/><br/>
Principles of environmental science: Inquiry and applications 

 - 2nd ed. 
 - New Delhi  Tata Mc Graw Hill  2004 
 - 424p 
<br/><br/><label>ISBN: </label>0-07-250931-7 
<br/><br/><label>Dewey Class. No.: </label>367.7  C917P