Staying healthy : health issues surrounding proposed changes in clean air standards : hearing before the Subcommittee on Public Health of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Seventh Congress, second ... September 3, 2002.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O. [Congressional Sales Office], 2003.