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Author
Woolsey, Lester Hood, 1877-1961. (1)
Subject
Carboniferous - Monongahela formation; Conemaugh formation; Ames limestone; Allegheny formation; Pottsville sandstone (1)
Geology -- Pennsylvania -- Allegheny County -- Maps (1)
Geology -- Pennsylvania -- Beaver County -- Maps (1)Geology -- United States --Maps (1)
Neogene - Carmichaels formation (1)
... View MoreDate Issued1905 (1)TypeBook (1)
Image (1)
Map (1)
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Yes (1)