@misc{indiciae98aafe0c27a3,
  title = {Geologic map of parts of the Majestic-Hurley and Wharncliffe quadrangles, Pike County, Kentucky},
  author = {William F. Outerbridge},
  year = {1968},
  doi = {10.3133/gq748},
  url = {https://pubs.usgs.gov/publication/gq748},
  note = {Source identifier: gq748}
}