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
PY  - 1992
DO  - 10.3133/b1839k_1992
UR  - https://pubs.usgs.gov/publication/b1839K_1992
ID  - b1839K_1992
ER  -