Hearings Before a Subcommittee of the Committee on Armed Services, United States Senate, Eighty-sixth Congress, First Session on S. 500, Amending Title 10, United States Code, with Respect to Procurement Procedures of the Armed Services : S. 1383, Requiring the Use of Competitive Bidding to the Greatest Practicable Extent in the Procurement of Property and Services by the Armed Forces Through the Establishment by the Secretary of Defense of Specific Standards Governing the Use of Negotiated Contracts for Such Procurement : S. 1875, Amending Title 10, United States Code, to Encourage Competition in the Procurement of the Armed Services, July 13, 15, 21, 24, 28, and 31, 1959