@misc{indiciae13049aa53b8b,
  title = {Geologic map of the Mount Washington quadrangle, north-central Kentucky},
  author = {Roy Clark Kepferle},
  year = {1976},
  doi = {10.3133/gq1282},
  url = {https://pubs.usgs.gov/publication/gq1282},
  note = {Source identifier: gq1282}
}