Proceedings:   The third national conference on air pollution Washington D C 
/ December 12-14, 1966 
 - Washington:   The Superintendent of Documents,   1966 
 - 666p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air pollution 
<br/><br/><label>Universal Decimal Class. No.: </label>614.71(082.2)  / K7