@misc{indiciaedf387489616c,
  title = {Geology of the Tyner quadrangle, Kentucky},
  author = {George L. Snyder},
  year = {1963},
  doi = {10.3133/gq247},
  url = {https://pubs.usgs.gov/publication/gq247},
  note = {Source identifier: gq247}
}