@misc{indiciaee864aacb07fb,
  title = {Aeromagnetic map of the Ahmeek quadrangle, Keweenaw and Houghton Counties, Michigan},
  author = {James R. Balsley and J. L. Meuschke and Jean Blanchett},
  year = {1963},
  doi = {10.3133/gp318},
  url = {https://pubs.usgs.gov/publication/gp318},
  note = {Source identifier: gp318}
}