Johnstown folio, Pennsylvania
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DescriptionJohnstown folio, Pennsylvania
SubjectDevonian - Catskill formation
Neogene - unnamed strata
Carboniferous - Conemaugh formation; Allegheny formation; Pottsville formation; Mauch Chunk shale; Pocono formation
Geology -- United States --Maps
Phalen, William Clifton, 1877-1949. (1910). Johnstown folio, Pennsylvania. Geological Survey (United States). Available electronically from
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