Upadhyay Pradeep Kumar <br/><br/>
Paryavaran Adhyayan   : Ek Samagra Avlokan 
/ by Pradeep Kumar Upadhyay 
 - New Delhi:  K. K. Publications,  2018. 
 - ix,399p. 
<br/><br/><label>ISBN: </label>9788178442518 
<br/><br/><label>Dewey Class. No.: </label>372.357  / UPA/P