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Date: 2013-04-01 12:55:00Geology Geological surveys Paleozoic Marcellus Formation United States Geological Survey Geographic information system Utah Geological Survey Digital geologic mapping | DOCswooshLargeBrochure_richBLACKAdd to Reading ListSource URL: www.wvgs.wvnet.eduDownload Document from Source WebsiteFile Size: 1,75 MBShare Document on Facebook |