@misc{indiciaefd6d66624f52,
  title = {Preliminary map showing structural fabric of central Kentucky and part of Ohio},
  author = {Douglas F. B. Black},
  year = {1978},
  doi = {10.3133/ofr78454},
  url = {https://pubs.usgs.gov/publication/ofr78454},
  note = {Source identifier: ofr78454}
}