@misc{indiciae8b81592f158a,
  title = {Geologic map of the Fairfield quadrangle, central Kentucky},
  author = {Warren Lee Peterson},
  year = {1975},
  doi = {10.3133/gq1225},
  url = {https://pubs.usgs.gov/publication/gq1225},
  note = {Source identifier: gq1225}
}