@misc{indiciae467081cafdd6,
  title = {Geology of the Basin Quadrangle, Montana},
  author = {Edward Thompson Ruppel},
  year = {1957},
  doi = {10.3133/ofr5887},
  url = {https://pubs.usgs.gov/publication/ofr5887},
  note = {Source identifier: ofr5887}
}