Natural gas for resale for industrial use : hearing before a Subcommittee of the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-seventh Congress, second session, on H.R. 6949, a bill to amend Section 4(e) of the Natural gas act ..., S. 1595, an act to amend the Natural gas act ..., February 14, 1962. (U.S. G.P.O.,, 1962)