@misc{indiciaee9c61c3fb7c2,
  title = {Geologic map of the White Oak Quadrangle, Magoffin and Morgan counties, Kentucky},
  author = {Edward G. Sable},
  year = {1977},
  doi = {10.3133/ofr77519},
  url = {https://pubs.usgs.gov/publication/ofr77519},
  note = {Source identifier: ofr77519}
}