@misc{indiciae38d889c6b018,
  title = {Geologic map of the Campbellsville quadrangle, southern Kentucky},
  author = {Alfred R. Taylor},
  year = {1965},
  doi = {10.3133/gq448},
  url = {https://pubs.usgs.gov/publication/gq448},
  note = {Source identifier: gq448}
}