@misc{indiciaecddebd2bf0ec,
  title = {Geologic map of the Canoe quadrangle, Breathitt and Perry Counties, Kentucky},
  author = {E. Neal Hinrichs},
  year = {1978},
  doi = {10.3133/gq1497},
  url = {https://pubs.usgs.gov/publication/gq1497},
  note = {Source identifier: gq1497}
}