@misc{indiciae74997dee3375,
  title = {Total intensity aeromagnetic map and accompanying aeromagnetic profiles, parts of Clearwater, Polk, and Red Lake Counties, Minnesota},
  author = {J. R. Balsley and M. E. Hill and J. L. Meuschke},
  year = {1951},
  doi = {10.3133/gp46},
  url = {https://pubs.usgs.gov/publication/gp46},
  note = {Source identifier: gp46}
}