@misc{indiciaee98118592a7d,
  title = {Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Fayette County, Ohio to Botetourt County, Virginia},
  author = {Robert T. Ryder and John E. Repetski and Anita G. Harris},
  year = {1996},
  doi = {10.3133/i2495},
  url = {https://pubs.usgs.gov/publication/i2495},
  note = {Source identifier: i2495}
}