@misc{indiciaee98a7367f4a3,
  title = {Uranium in Sharon Springs member of Pierre shale, South Dakota and northeastern Nebraska},
  author = {Roy Clark Kepferle},
  year = {1959},
  doi = {10.3133/b1046r},
  url = {https://pubs.usgs.gov/publication/b1046R},
  note = {Source identifier: b1046R}
}