@misc{indiciaead952a8fd807,
  title = {Aeromagnetic map of Norman and part of Mahnomen Counties, Minnesota},
  author = {L. A. Anderson and G. L. Zandle},
  year = {1962},
  doi = {10.3133/gp325},
  url = {https://pubs.usgs.gov/publication/gp325},
  note = {Source identifier: gp325}
}