@misc{indiciae7f1f6e2c5347,
  title = {Aeromagnetic map of the Tobacco Roots area, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1981},
  doi = {10.3133/ofr81777},
  url = {https://pubs.usgs.gov/publication/ofr81777},
  note = {Source identifier: ofr81777}
}