@misc{indiciaec6a67b7f91cc,
  title = {Manganese deposits near Dunseith, North Dakota},
  author = {T. A. Hendricks},
  year = {1941},
  doi = {10.3133/ofr4124},
  url = {https://pubs.usgs.gov/publication/ofr4124},
  note = {Source identifier: ofr4124}
}