. . "Current national parks bills hearing before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Tenth Congress, second session, on S. 1633, S. 1993, S. 2207, S. 2254, S. 2262, S. 2329, S. 2502, S. 2512, H.R. 2197, H.R. 2627, H.R. 3332, H.R. 3998, April 9, 2008"@en . . . . . "Current national parks bills : hearing before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Tenth Congress, second session, on S. 1633, S. 1993, S. 2207, S. 2254, S. 2262, S. 2329, S. 2502, S. 2512, H.R. 2197, H.R. 2627, H.R. 3332, H.R. 3998, April 9, 2008"@en . . . . . . . . .