1. Stratigraphic framework and depositional sequences in the lower Silurian regional oil and gas accumulation, Appalachian Basin, from Jackson County, Ohio, through northwestern Pennsylvania, to Orleans County, New York Author/Creator: Ryder, Robert T. Publication/Creation: Denver, CO : Information Services [distributor]. Resource Type: Map Access & Availability: Loading
2. Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin, from Licking County, Ohio, to Fayette County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : U.S. Geological Survey, Information Services [distributor], 2006 Resource Type: Map Access & Availability: Loading