@misc{indiciae0a0daedf6ec9,
  title = {Index map of cross sections through parts of the Appalachian basin (Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia)},
  author = {Robert T. Ryder and Michael H. Trippi},
  year = {2014},
  doi = {10.3133/pp1708e.1},
  url = {https://pubs.usgs.gov/publication/pp1708E.1},
  note = {Source identifier: pp1708E.1}
}