@misc{indiciaec0655b26117a,
  title = {Mineral resources of the Choteau 1° x 2° quadrangle, Montana},
  author = {R.L. Earhart and M. R. Mudge and J. W. Whipple and J. J. Connor},
  year = {1981},
  doi = {10.3133/mf858a},
  url = {https://pubs.usgs.gov/publication/mf858A},
  note = {Source identifier: mf858A}
}