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Formations (Geology)--West Virginia (2) |
Geology (2) |
Aluvium--West Virginia (1) |
Blue Monday sandstone (1) |
Devonian shale (1) |
Devonian stratigraphy (1) |
Event stratigraphy--West Virginia (1) |
Geology, Stratigraphic (1) |
Geology, Stratigraphic--Devonian (1) |
Late Mississippian (1) |