@misc{indiciae21ef09099962,
  title = {Geologic map of the Nevelsville quadrangle, south-central Kentucky},
  author = {J. Hiram Smith},
  year = {1976},
  doi = {10.3133/gq1326},
  url = {https://pubs.usgs.gov/publication/gq1326},
  note = {Source identifier: gq1326}
}