@misc{indiciae1c8345c7cde4,
  title = {Geologic map of the Mistletoe quadrangle, southeastern Kentucky},
  author = {Richard Peter Volckmann and Gerhard W. Leo},
  year = {1978},
  doi = {10.3133/gq1474},
  url = {https://pubs.usgs.gov/publication/gq1474},
  note = {Source identifier: gq1474}
}