Environmental degradation : 
Hussain, Mumtaz. 
 - Lahore, Pakistan :  Ferozsons Ltd., 
 - 409 p. :  22 cm. 
<br/><br/><label>ISBN: </label>969-00-1501-X 
<br/><br/><label>Dewey Class. No.: </label>363.7 HUS