Title: The Environmental Protection Agency's national ambient air quality standards for ozone and PM 2.5
Subtitle: hearing before the Committee on Agriculture, House of Representatives, One Hundred Fifth Congress, first session, September 16, 1997.
Subjects: Ozone, Air quality, Environmental aspects of Ozone, Air, Particles, Environmental aspects of Particles, Standards, Pollution, Environmental law, united states, United states, environmental protection agency, Environmental aspects
Places: United States