@misc{indiciaef0229a5c7def,
  title = {A contribution to the geology of northeastern Texas and southern Oklahoma},
  author = {Lloyd William Stephenson},
  year = {1919},
  doi = {10.3133/pp120h},
  url = {https://pubs.usgs.gov/publication/pp120H},
  note = {Source identifier: pp120H}
}