Esworthy, Robert, <br/><br/>
Particulate matter (PM2.5) :  implementation of the 1997 National Ambient Air Quality Standards (NAAQS)  / 
Robert Esworthy. 
 - [Library of Congress public edition]. 
 - 1 online resource. 
 - Report / Congressional Research Service ;  RL32431 .
 - CRS report ;  RL32431. .
<br/><br/> The CRS report home page provides access to all versions published since 2018 in accordance with P.L. 115-141; earliest version dated 2010.  Report includes maps.  GPO Cataloging Record Distribution Program (CRDP). 
<br/><br/>Report includes bibliographical references. 
<br/><br/><label>LCCN: </label>2020246360 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--United States.<br/>Air quality management--Government policy--United States.
<br/><br/><label>GPO Item No.: </label>0807-A-07 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>LC 14.23:RL 32431/