@misc{indiciaead3f12b0bbbc,
  title = {Geology of the Bristow quadrangle, Kentucky},
  author = {Benjamin Gildersleeve},
  year = {1963},
  doi = {10.3133/gq216},
  url = {https://pubs.usgs.gov/publication/gq216},
  note = {Source identifier: gq216}
}