Hearing on the lease prospectuses contained in the General Services Administration's fiscal year 1992 capital improvement program; and on proposals relating to the Smithsonian Institution; the Smithsonian Environmental Research Center (SERC); the East Court building project of the National Museum of Natural History; the National Air and Space Museum extension; and the Administrative Center : hearing before the Subcommittee on Public Buildings and Grounds of the Committee on Public Works and Transportation, House of Representatives, One Hundred Second Congress, first session, June 26, 1991.