Purchase of Supplies and the Making of Contracts by the United States: Hearings Before a Subcommittee of the Committee on Education and Labor, United States Senate, Seventy-sixth Congress, First Session, on S. 1032, a Bill to Amend the Act Entitled "an Act to Provide Conditions for the Purchase of Supplies and the Making of Contracts by the United States", and for Other Purposes, May 13, 18 and 19, 1939