@misc{indiciae93b6221f0f76,
  title = {Geology of the Black Knob Ridge area, Atoka County, Oklahoma},
  author = {Thomas Andrews Hendricks},
  year = {1943},
  doi = {10.3133/om1},
  url = {https://pubs.usgs.gov/publication/om1},
  note = {Source identifier: om1}
}