Various parks and Bureau of Land Management related legislation : hearing before the Subcommittee on Parks, Recreation, and Renewable Resources of the Committee on Energy and Natural Resources, United States Senate, Ninety sixth Congress, second session, on S. 1506, H.R. 1762, S. 1715, S. 1803, H.R. 3928, S. 1910, S. 1923, S. 1972, S. 1985, S. 1997, H.R. 1967, S. 2209, S. 2261, S. 2307, H.R. 920, S. 2363, S. 2364, and S. 2398, March 25, 1980.

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