@misc{indiciae56974a8c2b70,
  title = {Geologic map of the Guston quadrangle, Meade and Breckinridge Counties, Kentucky},
  author = {James Edward Palmer},
  year = {1978},
  doi = {10.3133/gq1481},
  url = {https://pubs.usgs.gov/publication/gq1481},
  note = {Source identifier: gq1481}
}