. . . "Health impacts of PM-2.5 associated with power plant emissions hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Seventh Congress, second session, October 2, 2002"@en . . . . . . . . . "Health impacts of PM-2.5 associated with power plant emissions : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Seventh Congress, second session, October 2, 2002"@en . . . . .