Review of the liquid metal fast breeder reactor program. Volume II, Hearings of June 18 and 24; and July 10 and 17; and appendixes : hearings before the Ad Hoc Subcommittee to Review the Liquid Metal Fast Breeder Reactor Program of the Joint Committee on Atomic Energy, Congress of the United States, Ninety-fourth Congress, first session, April 29, May 1, 6, and 7, June 10, 11, 17, 18, and 24, July 10 and 17, 1975