Srivastava, Smriti <br/><br/>
Environmental Studies 

 - 2nd 
 - Delhi  S.K. Kataria & Sons  2010-2011 
 - 337p. 
<br/><br/><label>ISBN: </label>9788189757458 
<br/><br/><label>Dewey Class. No.: </label>333.7  / Sri-E