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Oversight of the operation of the U.S. Geological Survey hearing before the Subcommittee on Minerals, Materials and Fuels of the Committee on Interior and Insular Affairs, United States Senate, Ninety-fourth Congress, first session
- "Oversight of the operation of the U.S. Geological Survey hearing before the Subcommittee on Minerals, Materials and Fuels of the Committee on Interior and Insular Affairs, United States Senate, Ninety-fourth Congress, first session"@en
- "Oversight of the operation of the U.S. Geological Survey : hearing before the Subcommittee on Minerals, Materials and Fuels of the Committee on Interior and Insular Affairs, United States Senate, Ninety-fourth Congress, first session"