@misc{indiciae9d1192848315,
  title = {Preliminary geologic maps of 11 quadrangles in north-central North Dakota (Westhope, Dokken, Mohall, Eckman, Deep River, Denbigh, Saline, Karlsruhe, Balfour, Kongsberg, and Benedict)},
  author = {Richard Walter Lemke},
  year = {1951},
  doi = {10.3133/ofr5110},
  url = {https://pubs.usgs.gov/publication/ofr5110},
  note = {Source identifier: ofr5110}
}