Navajo Indian irrigation project : Hearing before the Subcommittee on Irrigation and Reclamation of the Committee on Interior and Insular Affairs, House of Representatives, Ninety-first Congress, second session, on S. 203 and H.R. 13001 to amend the Act of June 13, 1962, with respect to the Navajo Indian Irrigation Project hearing held in Washington, D.C. June 11, 1970. (United States Government Printing Ofice, 1970)