@misc{indiciae574cf3c755a9,
  title = {Geologic map of part of the Madison West quadrangle, Trimble County, Kentucky},
  author = {W. C. Swadley},
  year = {1978},
  doi = {10.3133/gq1469},
  url = {https://pubs.usgs.gov/publication/gq1469},
  note = {Source identifier: gq1469}
}