@misc{indiciae13443506e5fd,
  title = {Geologic map of the Brooksville quadrangle, Bracken County, Kentucky},
  author = {William F. Outerbridge},
  year = {1971},
  doi = {10.3133/gq905},
  url = {https://pubs.usgs.gov/publication/gq905},
  note = {Source identifier: gq905}
}