@misc{indiciaeecb562ef7a47,
  title = {Total intensity aeromagnetic map of western Polk County, Minnesota},
  author = {J. L. Meuschke and Kenneth G. Books},
  year = {1954},
  doi = {10.3133/ofr54207},
  url = {https://pubs.usgs.gov/publication/ofr54207},
  note = {Source identifier: ofr54207}
}