TY  - RPRT
TI  - Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania
AU  - R. T. Ryder
PY  - 1992
DO  - 10.3133/i2200
UR  - https://pubs.usgs.gov/publication/i2200
ID  - i2200
ER  -