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- Geological Survey (U.S.)6
- Arkansas Geological Survey2
- Abdulin A. A.1
- Arkansas Geological Commission1
- Cohee, George Vincent, 1907-1
- Cooperative Geological Mapping Program (U.S.)1
- Hayes, Timothy Scott1
- Iowa Geological Survey1
- Jorgensen, Donald G.1
- Karklins, Olgerts L., 1924-1
- Krizanich, Gary W.1
- Lester, Michael R.1
- Michigan. Department of Conservation1
- Michigan. Geological Survey Division1
- Ministerstvo geologii Kazkhskoĭ SSR, issuing body1
- Missouri. Division of Geology and Land Survey1
- Moskovskii gosudarstvennyi universitet im. M. V. Lomonosova, issuing body1
- Ohio. Division of Geological Survey1
- Palmer, James R.1
- Parker, Mary Combs1