@misc{indiciae97211264379c,
  title = {Geochemistry of uranium in apatite and phosphorite},
  author = {Z.S. Altschulter and R. S. Clarke and E. J. Young},
  year = {1958},
  doi = {10.3133/pp314d},
  url = {https://pubs.usgs.gov/publication/pp314D},
  note = {Source identifier: pp314D}
}