@misc{indiciaee61501515138,
  title = {Geologic map of the Brockway Quadrangle, McCone County, Montana},
  author = {Roger B. Colton and J. P. McGraw and S.L. Durst},
  year = {1994},
  doi = {10.3133/ofr88623},
  url = {https://pubs.usgs.gov/publication/ofr88623},
  note = {Source identifier: ofr88623}
}