@misc{indiciae73d492ecbf9b,
  title = {Geologic structure in the Cushing oil and gas field, Oklahoma and its relation to the oil, gas, and water},
  author = {Carl Hugh Beal},
  year = {1917},
  doi = {10.3133/b658},
  url = {https://pubs.usgs.gov/publication/b658},
  note = {Source identifier: b658}
}