Guide to reaserch in air pollution  projects active in calendar year 1972. 
Compiled by (the) Center for Air Environment Studies of the Pennsylvania State University. 
 - Research Triangle Park, N.C.  Environmental Protection Agency, Office of Air Quality Planning and Standards ; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]  1972. 
 - iii, 385 p.  27 cm. 
<br/><br/> Contract no.168-02-0077. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Research.