Arvind Kumar <br/><br/>
Environmental studies 

 - New Delhi  APH Publishing Corporation  2016 
 - xii, 218 p. 
<br/><br/> 2637 03/03/2017 HBD17/6872 08/03/2017 UIET (SFS) 
<br/><br/><label>ISBN: </label> RS995 
<br/><br/><label>Dewey Class. No.: </label>363.7 A87E