@misc{indiciae78878791b5da,
  title = {A geographic information system data base for coal and water resources of the Powder River coal region, southeastern Montana},
  author = {M. R. Cannon},
  year = {1990},
  doi = {10.3133/ofr90568},
  url = {https://pubs.usgs.gov/publication/ofr90568},
  note = {Source identifier: ofr90568}
}