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Author
Butts, Charles, 1863-1946. (1)
Subject
Carboniferous - Conemaugh formation; Ames limestone; Saltsburg sandstone; Allegheny formation; Vanport limestone; Pottsville formation; Pocono formation (1)
Geology -- United States --Maps (1)Geology--Pennsylvania--Maps (1)Neogene - Carmichaels formation (1)... View MoreDate Issued1904 (1)TypeBook (1)Image (1)
Map (1)
Has File(s)Yes (1)