@misc{indiciae37a230ecb895,
  title = {Geology of the Briensburg quadrangle, Kentucky},
  author = {T. William Lambert and L.M. MacCary},
  year = {1964},
  doi = {10.3133/gq327},
  url = {https://pubs.usgs.gov/publication/gq327},
  note = {Source identifier: gq327}
}