Asthana,D.K., <br/><br/>
A Textbook Of Environmental Studies 
By D.K.Asthana 
 - 2nd Ed 
 - New Delhi  S.Chand & Co.Ltd  2012 
 - 386P 
<br/><br/><label>ISBN: </label>8121927641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EVS
<br/><br/><label>Dewey Class. No.: </label>333.707  / AST