@misc{indiciae7f00a06d1eaa,
  title = {Preliminary geologic map of the White Butte West Quadrangle, Hettinger County, North Dakota},
  author = {Kenneth S. Soward},
  year = {1972},
  doi = {10.3133/ofr72357},
  url = {https://pubs.usgs.gov/publication/ofr72357},
  note = {Source identifier: ofr72357}
}