@misc{indiciae1349e49979b7,
  title = {Geology of the Elkmont quadrangle, Alabama-Tennessee},
  author = {W.M. McMaster},
  year = {1965},
  doi = {10.3133/i419},
  url = {https://pubs.usgs.gov/publication/i419},
  note = {Source identifier: i419}
}