@misc{indiciae7f5568357f24,
  title = {Geologic map of the Coppersville Quadrangle, Wayne and McCreary counties, Kentucky},
  author = {R.Q. Lewis and Audrey R. Taylor},
  year = {1974},
  doi = {10.3133/ofr7462},
  url = {https://pubs.usgs.gov/publication/ofr7462},
  note = {Source identifier: ofr7462}
}