PURAKAYASTHA , GAUTAM . <br/><br/>
ENVIROMENTAL STUDIES  

 - NEW DELHI  KALYANI PUBLISHERS  2007 
 - 349.:  22CM. 
<br/><br/><label>Subjects--Index Terms: </label>Indian Industry 
<br/><br/><label>Dewey Class. No.: </label>333.7 PUR