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Cretaceous - unnamed strata (5) |
Geology -- United States --Maps (5) |
Neogene - unnamed strata (5) |
Carboniferous - Calaveras formation (4) |
Geology--California--Maps (2) |
Carboniferous - Robinson formation; Calaveras formation (1) |
Geology -- California -- Alpine County -- Maps (1) |
Geology -- California -- Amador County -- Maps (1) |
Geology -- California -- Butte County -- Maps (1) |
Geology -- California -- Calaveras County -- Maps (1) |