@misc{indiciaefabcffb4d46f,
  title = {The Powder River oil field, Wyoming},
  author = {Carroll H. Wegemann},
  year = {1912},
  doi = {10.3133/b471a3},
  url = {https://pubs.usgs.gov/publication/b471A3},
  note = {Source identifier: b471A3}
}