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Author
Campbell, Marius R. (Marius Robinson), 1858-1940. (1)
SubjectCarboniferous - Dunkard formation; Monongahela formation; Conemaugh formation; Saltsburg sandstone; Allegheny formation; Pottsville sandstone; Mauch Chunk formation; Greenbrier limestone; Pocono sandstone (1)
Geology -- United States --Maps (1)
Geology--Pennsylvania--Indiana County--Maps (1)Geology--Pennsylvania--Westmoreland County--Maps (1)Neogene - Carmichaels clay (1)... View MoreDate Issued
1904 (1)
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Book (1)
Image (1)
Map (1)
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Yes (1)