@misc{indiciaefc4e3ded9800,
  title = {Geology of the Brownsville quadrangle, Kentucky},
  author = {Benjamin Gildersleeve},
  year = {1965},
  doi = {10.3133/gq411},
  url = {https://pubs.usgs.gov/publication/gq411},
  note = {Source identifier: gq411}
}