@misc{indiciaea1884bd6e80c,
  title = {Map showing Quaternary and late Tertiary terraces of the lower Bighorn River, Montana},
  author = {S.S. Agard},
  year = {1989},
  doi = {10.3133/mf2094},
  url = {https://pubs.usgs.gov/publication/mf2094},
  note = {Source identifier: mf2094}
}