Sethi, M. S. <br/><br/>
Global air pollution  problems for the future 

 - New Delhi  Commonwealth Publishers  1992 
 - 158p. 
<br/><br/><label>ISBN: </label>8171692206  180 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air pollution
<br/><br/><label>Dewey Class. No.: </label>363.7392  / SET