TY  - DATA
AU  - Esworthy,Robert
ED  - Library of Congress.
TI  - Air quality: EPA's 2013 changes to the particulate matter (PM) standard 
T2  - Report / Congressional Research Service
PY  - 2018///-
CY  - [Washington, D.C.]
PB  - Congressional Research Service
KW  - Air quality management
KW  - United States
KW  - Air
KW  - Pollution
KW  - Particles
KW  - Environmental aspects
N1  - Report includes illustrations; The CRS report home page provides access to all versions published since 2018 in accordance with P.L. 115-141; earliest version dated 2015; CRDP Program record; Report includes bibliographical references
UR  - https://purl.fdlp.gov/GPO/gpo121515
ER  -