@misc{indiciae2c87e8007150,
  title = {Possibilities of oil in the Porcupine dome, Rosebud County, Montana},
  author = {C. F. Bowen},
  year = {1916},
  doi = {10.3133/b621f},
  url = {https://pubs.usgs.gov/publication/b621F},
  note = {Source identifier: b621F}
}