@misc{indiciae4b9deff3fe88,
  title = {Geology of the Gresham quadrangle, Kentucky},
  author = {Alfred R. Taylor},
  year = {1965},
  doi = {10.3133/gq421},
  url = {https://pubs.usgs.gov/publication/gq421},
  note = {Source identifier: gq421}
}