McCarthy, James E.  (Specialist in environmental policy), <br/><br/>
Protecting clean air in national parks and wilderness areas / 
James E. McCarthy, Laura B. Comay. 
 - [Library of Congress public edition]. 
 - 1 online resource. 
 - IF ;  IF10496 .
 - In focus (Library of Congress. Congressional Research Service) ;  IF10496. .
<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 2016.  Report includes illustrations.  GPO Cataloging Record Distribution Program (CRDP). 
<br/><br/>Report includes bibliographical references. 
<br/><br/><label>LCCN: </label>2020246826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Prevention.--United States<br/>Wilderness areas--United States.<br/>National parks and reserves--United States.
<br/><br/><label>GPO Item No.: </label>0807-A-09 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>LC 14.24:IF 10496/