http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Risk assessment to support the review of the PM primary national ambient air quality standards
Office of Air Quality Planning and Standards.
1 online resource (524 pages) : illustrations (some color), color maps.
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.
Title from title screen (viewed on Oct. 2, 2012).
Includes bibliographical references (pages 187-191).