@misc{indiciae8b9022292e68,
  title = {Geology of the Versailles quadrangle, Kentucky},
  author = {Douglas F. B. Black},
  year = {1964},
  doi = {10.3133/gq325},
  url = {https://pubs.usgs.gov/publication/gq325},
  note = {Source identifier: gq325}
}