TY  - DATA
AU  - Esworthy,Robert
ED  - Library of Congress.
TI  - Particulate matter (PM2.5): implementation of the 1997 National Ambient Air Quality Standards (NAAQS)  
T2  - Report / Congressional Research Service
PY  - 2019///-
CY  - [Washington, D.C.]
PB  - Congressional Research Service
KW  - Air
KW  - Pollution
KW  - United States
KW  - Air quality management
KW  - Government policy
N1  - 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); Report includes bibliographical references
UR  - https://purl.fdlp.gov/GPO/gpo135842
ER  -