[Committee hearings] serial, 89th Congress. 1. Policies, program, and activities of Department of Interior, hearings, 89th Congress, 1st session. pt 2. Briefing on policies and programs of National Park Service, Bureau of Outdoor Recreation, on public land matters, on national cemetery policy, on overall mineral resources program, on helium activities in Bureau of Mines, on activities of Bureau of Mines, Jan. 29-Mar. 9, 1965.

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