@misc{indiciae111b2674fe08,
  title = {Geologic map of the Cravens quadrangle, Bullitt and Nelson Counties, Kentucky},
  author = {Warren Lee Peterson},
  year = {1968},
  doi = {10.3133/gq737},
  url = {https://pubs.usgs.gov/publication/gq737},
  note = {Source identifier: gq737}
}