@misc{indiciae13e052147565,
  title = {Geologic map of the Cobhill 7 1/2-minute Quadrangle, east-central Kentucky},
  author = {Donald Clay Haney},
  year = {1975},
  doi = {10.3133/ofr75377},
  url = {https://pubs.usgs.gov/publication/ofr75377},
  note = {Source identifier: ofr75377}
}