@misc{indiciae2a72a3a925ea,
  title = {Geologic map of the Keene quadrangle, central Kentucky},
  author = {Earle Rupert Cressman},
  year = {1965},
  doi = {10.3133/gq440},
  url = {https://pubs.usgs.gov/publication/gq440},
  note = {Source identifier: gq440}
}