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Geology, Stratigraphic Permian. (2) |
Geology. (2) |
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Petrology Kansas. (1) |
Petrology Oklahoma Osage County. (1) |
Petrology Oklahoma Pawnee County. (1) |
Petrology Oklahoma. (1) |
Geology, Stratigraphic Permian. (2) |
Geology. (2) |
Limestone. (1) |
Petrology Kansas. (1) |
Petrology Oklahoma Osage County. (1) |
Petrology Oklahoma Pawnee County. (1) |
Petrology Oklahoma. (1) |