Environmental air pollution and its control / 
Edited by	G R Chhatwal.. [et.al] 
 - New Delhi, India :   Anmol Publications,  1993 . 
 - 591 p. :  Ill. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air -- Pollution. <br/>Air quality management.
<br/><br/><label>Dewey Class. No.: </label>333.7  / CHE 1993