Das, D., <br/><br/>
Environmental Studies 

 - 1st. 
 - Guwahati:  K. M. Publishing,  2016. 
 - 298p.:  22 cm. 
<br/><br/><label>ISBN: </label>9789350675175 
<br/><br/><label>Dewey Class. No.: </label> / DAS