@misc{indiciae82a3a3582d9a,
  title = {Geologic map of Anderson, Franklin, Shelby, Spencer, and Woodford Counties, Kentucky (county group 24)},
  author = {Francis Ramey Hall and Wilbur Nathaniel Palmquist},
  year = {1960},
  doi = {10.3133/ha24},
  url = {https://pubs.usgs.gov/publication/ha24},
  note = {Source identifier: ha24}
}