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Author/Creator
- Geological Survey (U.S.)1,059
- United States233
- Geological Survey (U.S.), issuing body168
- United States. Congress. House. Committee on Ways and Means. Subcommittee on Health97
- United States. General Accounting Office49
- United States. Congress. House. Committee on Public Lands. (1805-1951)36
- Adrian, Betty M.34
- United States. Congress. Senate. Committee on Interior and Insular Affairs. (1948-1977)34
- Cathrall, John B.33
- Detra, D. E.33
- Saudi Arabia. Deputy Ministry for Mineral Resources33
- United States. Congress. House32
- Missouri. Division of Geology and Land Survey29
- Day, Gordon W.28
- Bullock, John H.27
- United States. Health Care Financing Administration27
- Erskine, Thomas Erskine, Baron, 1750-182326
- Erickson, M. S.24
- Rodriguez, Brian D.24
- Society of Exploration Geophysicists24