Title: EPA's proposed revisions to the particulate matter air quality standards
Subtitle: hearing before the Subcommittee on Clean Air, Climate Change, and Nuclear Safety of the Committee on Environment and Public Works, United States Senate, One Hundred Ninth Congress, second session, July 13, 2006.
Subjects: Standards, Particles, Environmental aspects of Particles, Air quality, Rules and practice, United States. Environmental Protection Agency, United States, Pollution, Air
Places: United States