@misc{indiciae7caf00b9636e,
  title = {Aeromagnetic map of the Butte 1 degree x 2 degree Quadrangle, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1984},
  doi = {10.3133/ofr84278},
  url = {https://pubs.usgs.gov/publication/ofr84278},
  note = {Source identifier: ofr84278}
}