The Administration's proposal for relaxation of air pollution standards.  Hearing, Ninety-third Congress, first session. 
September 18, 1973. 
 - Washington  U.S. Govt. Print. Off.  1973. 
 - iii, 130 p.  illus.  24 cm. 
<br/><br/> "Serial no. 93-H19." 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>73603338  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Standards--United States.
<br/><br/><label>LC Class. No.: </label>KF26  / .P825 1973e 
<br/><br/><label>Dewey Class. No.: </label>628.5/3/0973 
<br/><br/><label>Gov. Doc. Class. No.: </label>Y 4.P 96/10:93-H 19