@misc{indiciae8c265547bdd8,
  title = {Geologic map of the Wheelwright quadrangle, southeastern Kentucky},
  author = {William F. Outerbridge},
  year = {1975},
  doi = {10.3133/gq1251},
  url = {https://pubs.usgs.gov/publication/gq1251},
  note = {Source identifier: gq1251}
}