@misc{indiciae42e318a4a80f,
  title = {Geologic map of the Vest quadrangle, eastern Kentucky},
  author = {Walter Danilchik and H.A. Waldrop},
  year = {1978},
  doi = {10.3133/gq1441},
  url = {https://pubs.usgs.gov/publication/gq1441},
  note = {Source identifier: gq1441}
}