@misc{indiciae8d578b8232f1,
  title = {Radioactivity and uranium content, Sharon Springs member of the Pierre shale, Kansas and Colorado},
  author = {Edwin R. Landis},
  year = {1959},
  doi = {10.3133/b1046l},
  url = {https://pubs.usgs.gov/publication/b1046L},
  note = {Source identifier: b1046L}
}