@misc{indiciae5390c7d3cd06,
  title = {Selected hydrogeologic data from the Northern Great Plains area of Montana},
  author = {Gary W. Levings},
  year = {1981},
  doi = {10.3133/ofr81534},
  url = {https://pubs.usgs.gov/publication/ofr81534},
  note = {Source identifier: ofr81534}
}