@misc{indiciae60bbf90b7a45,
  title = {Geology and lignite resources of the Marmarth field, southwestern North Dakota},
  author = {Charles Joseph Hares},
  year = {1928},
  doi = {10.3133/b775},
  url = {https://pubs.usgs.gov/publication/b775},
  note = {Source identifier: b775}
}