@misc{indiciaee1633ff8c0ab,
  title = {Silurian nomenclature and correlations in southwest Virginia and northeast Tennessee},
  author = {Ralph L. Miller},
  year = {1976},
  doi = {10.3133/b1405h},
  url = {https://pubs.usgs.gov/publication/b1405H},
  note = {Source identifier: b1405H}
}