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Colophon
Geology, Stratigraphic--Paleozoic
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Geology, Stratigraphic--Carboniferous
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Geology, Stratigraphic--Pennsylvanian
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Pottsville Formation
Pottsville Formation
Geographic
sh90005505
·
id.loc.gov
Broader Terms (2)
Formations (Geology)--East (U.S.)
Geology, Stratigraphic--Pennsylvanian
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