@misc{indiciaebc7663be773a,
  title = {Geologic map of the Tollesboro quadrangle, Lewis and Fleming Counties, Kentucky},
  author = {John H. Peck},
  year = {1967},
  doi = {10.3133/gq661},
  url = {https://pubs.usgs.gov/publication/gq661},
  note = {Source identifier: gq661}
}