Singla,Deepika <br/><br/>
NTA UGC NET/JRF/SET Paper-2  : Environmental Science 
/ by Deepika Singhla 
 - New Delhi:  Arihant, 
 - 691p. 
<br/><br/><label>ISBN: </label>9789364378789 
<br/><br/><label>Dewey Class. No.: </label>577  / SIN/N