@misc{indiciae24bd1ce8587f,
  title = {Geologic structure and oil and gas prospects of a part of Jefferson County, Oklahoma},
  author = {Heath M. Robinson},
  year = {1921},
  doi = {10.3133/b726f},
  url = {https://pubs.usgs.gov/publication/b726F},
  note = {Source identifier: b726F}
}