@misc{indiciaeb0678a6491b2,
  title = {Aeromagnetic map of western Marshall and northwestern Polk Counties, Minnesota},
  author = {Kenneth G. Books and G. M. Schwartz and J. L. Meuschke and W.J. Dempsey},
  year = {1958},
  doi = {10.3133/gp145},
  url = {https://pubs.usgs.gov/publication/gp145},
  note = {Source identifier: gp145}
}