@misc{indiciae9bc17c340413,
  title = {Geologic map of the Livingston quadrangle, southeastern Kentucky},
  author = {William Randall Brown and M.J. Osolnik},
  year = {1974},
  doi = {10.3133/gq1179},
  url = {https://pubs.usgs.gov/publication/gq1179},
  note = {Source identifier: gq1179}
}