H.R. 489, H.R. 818, and H.R. 470 : legislative hearing before the Subcommittee on Water and Power of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Twelfth Congress, first session, Thursday, May 12, 2011.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.