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Author/Creator
- Geological Survey (U.S.)24
- Bedinger, M. S.6
- Langer, William H.6
- Thompson, Thomas H.5
- California. Division of Mines and Geology4
- Chappell, Richard4
- Anderson, T. W. (Thomas Warren), 1940-3
- Arizona. Department of Water Resources3
- Mulvihill, Deborah A.3
- Nevada Bureau of Mines and Geology3
- University of Arizona. Bureau of Geology and Mineral Technology3
- Arkansas Geological Commission2
- Arkansas Soil and Water Conservation Commission2
- Brady, Bruce T.2
- Curtin, Stephen E.2
- Edds, Joe, 1924-2
- Fitzpatrick, D. J. (Daniel J.)2
- Hart, D. L.2
- Izbicki, John A.2
- Mack, Frederick K.2