TY  - RPRT
TI  - Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, West Virginia
AU  - Robert T. Ryder
AU  - Anita G. Harris
AU  - John E. Repetski
AU  - Robert D. revised and digitized by Crangle
PY  - 2003
DO  - 10.3133/b1839k
UR  - https://pubs.usgs.gov/publication/b1839K
ID  - b1839K
ER  -