@misc{indiciaea8f2e1d95ac4,
  title = {Geology of the Cumberland Falls quadrangle, Kentucky},
  author = {J. Hiram Smith},
  year = {1963},
  doi = {10.3133/gq274},
  url = {https://pubs.usgs.gov/publication/gq274},
  note = {Source identifier: gq274}
}