Economics of defense procurement : the C-5A and strategic mobility : hearings before the Subcommittee on Priorities and Economy in Government of the Joint Economic Committee, Congress of the United States, Ninety-fourth Congress, second session, and Ninety-fifth Congress, first session, and Ninety-sixth Congress, second session : part 1, June 8, 1976, December 21 and 22, 1977, and August 25 and September 16, 1980.