@misc{indiciae920d1ec6535b,
  title = {Hydrology of area 47, Northern Great Plains and Rocky Mountain Coal Provinces, North Dakota, South Dakota, and Montana},
  author = {O.A. Crosby and R.L. Klausing},
  year = {1983},
  doi = {10.3133/ofr83221},
  url = {https://pubs.usgs.gov/publication/ofr83221},
  note = {Source identifier: ofr83221}
}