@misc{indiciae199ba6ca4f1f,
  title = {Geologic map of the Slade quadrangle, east-central Kentucky},
  author = {Gordon Whitney Weir},
  year = {1974},
  doi = {10.3133/gq1183},
  url = {https://pubs.usgs.gov/publication/gq1183},
  note = {Source identifier: gq1183}
}