@misc{indiciaefb82ea75769b,
  title = {Geologic map of the Ivyton quadrangle, eastern Kentucky},
  author = {Charles L. Rice},
  year = {1969},
  doi = {10.3133/gq801},
  url = {https://pubs.usgs.gov/publication/gq801},
  note = {Source identifier: gq801}
}