Uniform time : hearing before the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-ninth Congress, second session, on H.R. 76 ... H.R. 1581 ... H.R. 7167 ... S. 1404 ... H.R. 3385 ... H.R. 2424 ... H.R. 6481 ... (U.S. G.P.O., 1966)