@misc{indiciae982304812fca,
  title = {Geologic map of the Winchester quadrangle, Clark and Madison Counties, Kentucky},
  author = {Douglas F. B. Black},
  year = {1974},
  doi = {10.3133/gq1159},
  url = {https://pubs.usgs.gov/publication/gq1159},
  note = {Source identifier: gq1159}
}