Singla, Deepika <br/><br/>
NTA UGC NET/JRF/SET Paper - 2 Environmental Science 
by Deepika Singla and Vivek Sharma 
 - New Delhi  Arihant Publications 
 - 691p. 
<br/><br/><label>ISBN: </label>9789327199000 
<br/><br/><label>Dewey Class. No.: </label>574.5  / SIN/N