@misc{indiciaec38ba167455b,
  title = {Map of the northern part of the Appalachian Basin showing locations of selected deep wells},
  author = {G. M. Everhart},
  year = {1953},
  doi = {10.3133/om136},
  url = {https://pubs.usgs.gov/publication/om136},
  note = {Source identifier: om136}
}