Deswal, Surinder <br/><br/>
A basic course in environmental studies 

 - 3 
 - New Delhi  Dhanpat Rai & Co. Pvt. Ltd.  2017 
 - 481 
<br/><br/><label>LC Class. No.: </label>363.7  /  DES/BAS 
<br/><br/><label>Dewey Class. No.: </label>363.7   / 363.7