Construction set-asides, 1963 : hearings before a subcommittee of the Committee on Banking and Currency, United States Senate, Eighty-eighth Congress, first session, on S. 757, bills [sic] to amend the Small Buisness Act to provide that the program under which Government contracts are set aside for small business concerns shall not apply in the case of contracts for maintenance, repair, or construction, May 7,8, and 9, 1963