Environmental air pollution 
edited by Raj Gurdeep 
 - New Delhi  Akasdeep  1992 
 - 296p 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution-Environmental aspects<br/>Air-Pollution
<br/><br/><label>Dewey Class. No.: </label>363.7392  / ENV