@misc{indiciaebb8bc75aa672,
  title = {Geochemistry of uranium in phosphorites and black shales of the Phosphoria formation},
  author = {Richard Porter Sheldon},
  year = {1957},
  doi = {10.3133/tei483},
  url = {https://pubs.usgs.gov/publication/tei483},
  note = {Source identifier: tei483}
}