Environmental Studies/  a texbook for undergraduate students for a compulsory course 
Rana,S. V. S. 
 - New Delhi:  Rastogi Publications,  2012. 
 - 196 
<br/><br/><label>ISBN: </label>8171337287 
<br/><br/><label>Dewey Class. No.: </label>372.357  / RAN/E