@misc{indiciae882481b549fc,
  title = {Maps showing gravity and aeromagnetic anomalies in the Dillon 1° x 2° quadrangle, Idaho and Montana},
  author = {W. F. Hanna and H. E. Kaufmann and J. H. Hassemer and B. D. Ruppel and R. C. Pearson and E. T. Ruppel},
  year = {1993},
  doi = {10.3133/i1803i},
  url = {https://pubs.usgs.gov/publication/i1803I},
  note = {Source identifier: i1803I}
}