@misc{indiciae3fee8df55d8f,
  title = {Oil shale in western Montana, southeastern Idaho, and adjacent parts of Wyoming and Utah},
  author = {D. D. Condit},
  year = {1920},
  doi = {10.3133/b711b},
  url = {https://pubs.usgs.gov/publication/b711B},
  note = {Source identifier: b711B}
}