@misc{indiciae50eea46d0d75,
  title = {Reconnaissance geologic map of the St. Regis-Superior area, Mineral County, Montana},
  author = {Arthur Byron Campbell},
  year = {1956},
  doi = {10.3133/ofr5621},
  url = {https://pubs.usgs.gov/publication/ofr5621},
  note = {Source identifier: ofr5621}
}