Sharma, Punam  <br/><br/>
UGC NET/SET( JRF &  LS) Environmental Science  
/by Punam Sharma 
 - New Delhi  Arihant  
 - 576p. 
<br/><br/><label>ISBN: </label>9789350944721 
<br/><br/><label>Dewey Class. No.: </label>574.5  / SHA/U