@misc{indiciae33162b0a8df5,
  title = {Geologic map of the Guage quadrangle, Breathitt and Magoffin Counties, Kentucky},
  author = {K. Y. Lee and Walter Danilchik and Charles L. Rice},
  year = {1973},
  doi = {10.3133/ofr73372},
  url = {https://pubs.usgs.gov/publication/ofr73372},
  note = {Source identifier: ofr73372}
}