Regulate air quality on the Southern Ute Indian Reservation : hearing before the Committee on Indian Affairs, United States Senate, One Hundred Seventh Congress, second session, on S. 2065, to provide for the implementation of air quality programs developed pursuant to an intergovernmental agreement between the Southern Ute Indian tribes and the state of Colorado concerning air quality control on the Southern Ute Indian Reservation, July 18, 2002, Washington, DC. (U.S. G.P.O. :, 2002)