@misc{indiciaec3ce76d943d0,
  title = {Preliminary map of the geology of the Boxelder quadrangle, Montana},
  author = {Robert M. Lindvall},
  year = {1954},
  doi = {10.3133/ofr54167},
  url = {https://pubs.usgs.gov/publication/ofr54167},
  note = {Source identifier: ofr54167}
}