TY  - RPRT
TI  - Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Richland County, Ohio, to Rockingham County, Virginia
AU  - Robert T. Ryder
AU  - Robert D. Crangle
PY  - 2014
DO  - 10.3133/pp1708e.2.3
UR  - https://pubs.usgs.gov/publication/pp1708E.2.3
ID  - pp1708E.2.3
ER  -