@misc{indiciae19c6be263711,
  title = {Aeromagnetic and generalized geologic map of the Choteau 1 degree by 2 degrees Quadrangle, Montana},
  author = {M. D. Kleinkopf},
  year = {1981},
  doi = {10.3133/mf858g},
  url = {https://pubs.usgs.gov/publication/mf858G},
  note = {Source identifier: mf858G}
}