Public buildings cooperative use act of 1975 : hearing before the Subcommittee on Buildings and Grounds of the Committee on Public Works, United States Senate, Ninety-Fourth Congress, first session, on S. 865, a bill to promote more efficient use of the Nation's construction resources, to foster the preservation of buildings of historic or architectural significance, and to enhance the social and economic environment within and surrounding Federal office buildings, May 19, 1975.