Kalita, Dilip. <br/><br/>
পৰিবেশ বিজ্ঞান / 

 - Dibrugarh:  Dibru College;  2006. 
 - 246p.;  PBB  22 cm. 
<br/><br/><label>ISBN: </label> 115 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>575.5  / KAL