@misc{indiciae2c0847d2bb7e,
  title = {Preliminary ground-water availability map of Cass County, North Dakota},
  author = {Robert L. Klausing},
  year = {1967},
  doi = {10.3133/ofr67128},
  url = {https://pubs.usgs.gov/publication/ofr67128},
  note = {Source identifier: ofr67128}
}