National park concessions measures : hearing before the Subcommittee on National Parks and Public Lands of the Committee on Interior and Insular Affairs, House of Representatives, One Hundred Second Congress, first session, on H.R. 542 ... H.R. 294 ... H.R. 571 ... H.R. 943 ... H. Con. Res. 14 ... H. Con. Res. 20 ... hearing held in Washington, DC, June 11, 1991.
Coverage: Washington : U.S. G.P.O. : 1992.