@misc{indiciae029a73139384,
  title = {Uranium minerals in Oligocene gypsum near Chadron, Dawes County, Nebraska},
  author = {R.J. Dunham},
  year = {1955},
  doi = {10.3133/tei525},
  url = {https://pubs.usgs.gov/publication/tei525},
  note = {Source identifier: tei525}
}