@misc{indiciae3136bc65486c,
  title = {Geologic map of the Heitz School Quadrangle, Prairie and McCone counties, Montana},
  author = {R. B. Colton and J. P. McGraw and D. K. Bozeman},
  year = {1994},
  doi = {10.3133/ofr88608},
  url = {https://pubs.usgs.gov/publication/ofr88608},
  note = {Source identifier: ofr88608}
}