@misc{indiciaeca9311009a7b,
  title = {Aeromagnetic map of the Gallatin area, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/ofr791648},
  url = {https://pubs.usgs.gov/publication/ofr791648},
  note = {Source identifier: ofr791648}
}