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Author/Creator
- Geological Survey (U.S.)11
- Richmond, Gerald Martin, 1914-[remove]11
- Christiansen, Ann Coe5
- Fullerton, David S.5
- Moore, David W. (David Warren)2
- Oklahoma Geological Survey2
- University of Texas at Austin. Bureau of Economic Geology2
- University of Texas. Bureau of Economic Geology2
- Wermund, E. G.2
- Denne, Jane E.1
- Gray, Henry Hamilton, 1922-1
- Hallberg, George R.1
- Hartshorn, Joseph H. (Joseph Harold), 1922-1
- Howard, Alan D.1
- Indiana. Geological Survey1
- Iowa Geological Survey1
- Kansas Geological Survey1
- Luza, Kenneth V.1
- Missouri. Division of Geology and Land Survey1
- Pennsylvania. Bureau of Topographic and Geologic Survey1