@misc{indiciaea21fea536dff,
  title = {Aeromagnetic map of the Barker and Neihart quadrangles, Judith Basin, Cascade, and Meagher Counties, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/ofr69287},
  url = {https://pubs.usgs.gov/publication/ofr69287},
  note = {Source identifier: ofr69287}
}