@misc{indiciaec5e361e72292,
  title = {Geologic map of the Union School Quadrangle, Dawson and Prairie counties, Montana},
  author = {R. B. Colton and J. P. McGraw and S.L. Durst},
  year = {1994},
  doi = {10.3133/ofr88617},
  url = {https://pubs.usgs.gov/publication/ofr88617},
  note = {Source identifier: ofr88617}
}