@misc{indiciae3ab2d7d1cd03,
  title = {The Logan Plateau, a young physiographic region in West Virginia, Kentucky, Virginia, and Tennessee},
  author = {William F. Outerbridge},
  year = {1987},
  doi = {10.3133/b1620},
  url = {https://pubs.usgs.gov/publication/b1620},
  note = {Source identifier: b1620}
}