Particulate matter urban-focused visibility assessment
Subtitle: external review draft
Publisher: U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, Ambient Standards Group
Published: 2009
Place of publication: Research Triangle Park, North Carolina
Language: eng
Number of pages: 156
Subjects: Particles; Environmental aspects; Visibility; Measurement; Urban pollution; Air quality; Standards
Notes: Title from title screen (viewed on May 10, 2013).

"September 2009."

"DRAFT - Do not quote or cite."

"EPA 452/P-09-005."

Includes bibliographical references.