@misc{indiciae0a4b7ea0e35e,
  title = {Reconnaissance for trace elements in North Dakota and eastern Montana. Part 1. Geology and radioactivity. Part 2. Reserves and summary},
  author = {Donald G. Wyant and Ernest P. Beroni},
  year = {1950},
  doi = {10.3133/tei61},
  url = {https://pubs.usgs.gov/publication/tei61},
  note = {Source identifier: tei61}
}