Purkayastha, Gautam <br/><br/>
Environmental studies 

 - New Delhi:  Kalyani Publishers,  2019. 
 - 372 p. 
<br/><br/><label>ISBN: </label>9789388778398 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences <br/>Human ecology <br/>Environmental protection
<br/><br/><label>Dewey Class. No.: </label>628 PUR