@misc{indiciae8aa36c6648f1,
  title = {Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Campbell County, Kentucky, to Tazewell County, Virginia},
  author = {Robert T. Ryder and John E. Repetski and Anita G. Harris and Erika E. Lentz},
  year = {2014},
  doi = {10.3133/pp1708e.2.4},
  url = {https://pubs.usgs.gov/publication/pp1708E.2.4},
  note = {Source identifier: pp1708E.2.4}
}