The science and risk assessment behind EPA's proposed revisions to the particulate matter air quality standards : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Ninth Congress, second session, July 19, 2006., by United States. Congress. Senate. Committee on Environment and Public Works

Title:	The science and risk assessment behind EPA's proposed revisions to the particulate matter air quality standards : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Ninth Congress, second session, July 19, 2006.
Author:	United States. Congress. Senate. Committee on Environment and Public Works
Note:	U.S. G.P.O. :, 2009

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Subject:	Air quality -- Standards -- United States
Subject:	Air -- Pollution -- Standards -- United States
Subject:	Environmental risk assessment -- United States
Subject:	Health risk assessment -- United States
Subject:	Particles -- Environmental aspects -- United States
Subject:	United States. Environmental Protection Agency -- Rules and practice
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