@misc{indiciae59852bf0e09c,
  title = {Geologic map of the Bloomfield quadrangle, Nelson and Spencer Counties, Kentucky},
  author = {Warren Lee Peterson},
  year = {1973},
  doi = {10.3133/gq1101},
  url = {https://pubs.usgs.gov/publication/gq1101},
  note = {Source identifier: gq1101}
}