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Transportation access to national park system hearing before the Subcommittee on Parks and Recreation of the Committee on Energy and Natural Resources, United States Senate, Ninety-fifth Congress, first session, on S. 975 ... June 8, 1977
- "Transportation access to national park system : hearing before the Subcommittee on Parks and Recreation of the Committee on Energy and Natural Resources, United States Senate, Ninety-fifth Congress, first session, on S. 975 ... June 8, 1977"
- "Transportation access to national park system hearing before the Subcommittee on Parks and Recreation of the Committee on Energy and Natural Resources, United States Senate, Ninety-fifth Congress, first session, on S. 975 ... June 8, 1977"@en