@misc{indiciae4981785089bb,
  title = {Geologic map of the New Columbus quadrangle, north-central Kentucky},
  author = {Frank R. Moore},
  year = {1978},
  doi = {10.3133/gq1492},
  url = {https://pubs.usgs.gov/publication/gq1492},
  note = {Source identifier: gq1492}
}