@misc{indiciaead3bca0d9683,
  title = {Devonian of the Appalachian Basin, United States},
  author = {William A. Oliver and Wallace De Witt and John M. Dennison and D.M. Hoskins and John W. Huddle},
  year = {1967},
  url = {https://pubs.usgs.gov/publication/70156256},
  note = {Source identifier: 70156256}
}