@misc{indiciaec2d06071390e,
  title = {Total intensity aeromagnetic map and accompanying aeromagnetic profiles, southern part of Otter Tail County, Minnesota},
  author = {J. R. Balsley and M. E. Hill and J. L. Meuschke},
  year = {1951},
  doi = {10.3133/gp50},
  url = {https://pubs.usgs.gov/publication/gp50},
  note = {Source identifier: gp50}
}