DR.RAGHAVAN NAMBIAR ,K. <br/><br/>
TEXTBOOK OF ENVIRONMENTAL STUDIES 

 - 2nd Ed. 
 -  Scitech Publications ( India ) Pvt. Ltd., Chennai   2008 
<br/><br/><label>ISBN: </label>9788183711111 
<br/><br/><label>Dewey Class. No.: </label>620.8  / DR./T