@misc{indiciae53cbc859fb07,
  title = {Geologic map of the Bledsoe quadrangle, southeastern Kentucky},
  author = {Bela Csejtey},
  year = {1971},
  doi = {10.3133/gq889},
  url = {https://pubs.usgs.gov/publication/gq889},
  note = {Source identifier: gq889}
}