@misc{indiciaef87355f10b26,
  title = {Geology of the Oldtown quadrangle, Kentucky},
  author = {Charles L. Whittington and John C. Ferm},
  year = {1965},
  doi = {10.3133/gq353},
  url = {https://pubs.usgs.gov/publication/gq353},
  note = {Source identifier: gq353}
}