@misc{indiciaeafae0e8b4496,
  title = {Geologic map of the Alcorn quadrangle, east-central Kentucky},
  author = {Charles L. Rice},
  year = {1972},
  doi = {10.3133/gq963},
  url = {https://pubs.usgs.gov/publication/gq963},
  note = {Source identifier: gq963}
}