Guidelines for air quality maintenance planning and analysis 

 - Washington, D.C. :  U.S. Environmental Protection Agency,  1974 
 - v. :  ill. ;  2cm. 
 - OAQPS ;  no. 1.2-031 .
<br/><br/> EPA-450/4-74-013  Library has v. 12 
<br/><br/>Vol. 12. Applying atomospheric simulation models to air quality maintenance areas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air Pollution
<br/><br/><label>Dewey Class. No.: </label>363.7392