@misc{indiciae8a72f57f874d,
  title = {Geologic map of the Leitchfield quadrangle, Grayson County, Kentucky},
  author = {Benjamin Gildersleeve},
  year = {1978},
  doi = {10.3133/gq1316},
  url = {https://pubs.usgs.gov/publication/gq1316},
  note = {Source identifier: gq1316}
}