Watershed projects : hearings before a Subcommittee of the Committee on Agriculture and Forestry, United States Senate, 87th Congress, 1st session, on the administration of the Watershed protection and flood prevention Act, Public Law 566, 83rd Congress; and the Pony Creek, Iowa, and Brodhead Creek, Pa., watershed projects, September 5, 1961. (U.S. G.P.O., 1961)