@misc{indiciae5cbfd6ac291f,
  title = {Geologic map of the Nevelsville Quadrangle, south-central Kentucky},
  author = {J.H. Smith},
  year = {1975},
  doi = {10.3133/ofr7537},
  url = {https://pubs.usgs.gov/publication/ofr7537},
  note = {Source identifier: ofr7537}
}