Singh,Pratibha <br/><br/>
Environmental studies  Choice based credit system 

 - New Delhi  Galgotia Publishing Company  2016 
 - 300 
<br/><br/><label>ISBN: </label>978-93-86184-02-3 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>574.5