Outdoor recreation and ski permits on national forest lands : hearings before the Subcommittee on the Environment and Land Resources of the Committee on Interior and Insular Affairs, United States Senate, Ninety fourth Congress, first session, on S. 2125 ... Aspen, Colo., October 4, 1975, Denver, Colo., October 6, 1975, Washington, D.C., November 17, 1975.

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