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Now showing items 1-10 of 3
Devonian - Hampshire formation; Jennings formation; Romney shale; Monterey sandstone (3) |
Geology -- United States --Maps (3) |
Geology--Virginia--Maps (2) |
Carboniferous - Blackwater formation; Canna formation; Greenbrier limestone; Pocono sandstone (1) |
Carboniferous - Elkgarden formation; Fairfax formation; Bayard formation; Savage formation; Blackwater formation; Canaan formation; Greenbrier limestone; Pocono sandstone (1) |
Carboniferous - Pocono sandstone (1) |
Geology--Maryland--Maps (1) |
Geology--West Virginia--Maps (1) |
Geology--West Virginia--Pendleton County--Maps (1) |
Jurassic - unnamed strata (1) |