@misc{indiciae60cff7e5bc51,
  title = {Uranium in carbonaceous rocks in the Townsend and Helena valleys, Montana},
  author = {George E. Becraft},
  year = {1956},
  doi = {10.3133/tei581},
  url = {https://pubs.usgs.gov/publication/tei581},
  note = {Source identifier: tei581}
}