Federal constitutional convention procedures [electronic resource] : hearing before the Subcommittee on Separation of Powers of the Committee on the Judiciary, United States Senate, Ninety-third Congress, first session on S. 1272, a bill to provide procedures for calling constitutional conventions for proposing amendments to the Constitution of the United States, on application of the legislatures of two-thirds of the states pursuant to Article V of the Constitution, April 12, 1973.