@misc{indiciae42bb12556e32,
  title = {Geologic map of the Albany quadrangle, Kentucky-Tennessee},
  author = {Richard Quintin Lewis and Robert E. Thaden},
  year = {1966},
  doi = {10.3133/gq550},
  url = {https://pubs.usgs.gov/publication/gq550},
  note = {Source identifier: gq550}
}