@misc{indiciae98d310978e33,
  title = {Geologic map of the Hillsboro quadrangle, Fleming and Bath Counties, Kentucky},
  author = {James W. Mytton and Robert C. McDowell},
  year = {1970},
  doi = {10.3133/gq876},
  url = {https://pubs.usgs.gov/publication/gq876},
  note = {Source identifier: gq876}
}