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Colophon
Geology, Stratigraphic--Paleozoic
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Geology, Stratigraphic--Devonian
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Marcellus Shale
Marcellus Shale
Geographic
sh2009007684
·
id.loc.gov
Used for
Marcellus Formation
Broader Terms (2)
Formations (Geology)--Appalachian Region
Geology, Stratigraphic--Devonian
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