@misc{indiciaedbcc77992c9c,
  title = {Geologic map of the Livermore quadrangle, western Kentucky},
  author = {Dan E. Hansen and Avery E. Smith},
  year = {1978},
  doi = {10.3133/gq1467},
  url = {https://pubs.usgs.gov/publication/gq1467},
  note = {Source identifier: gq1467}
}