@misc{indiciae54505fd109aa,
  title = {Geologic map of the Hickory quadrangle, Graves County, Kentucky},
  author = {Lawrence Vernon Blade},
  year = {1965},
  doi = {10.3133/gq457},
  url = {https://pubs.usgs.gov/publication/gq457},
  note = {Source identifier: gq457}
}