@misc{indiciaee8383f3d3597,
  title = {The determination of uranium (IV) in apatite},
  author = {Roy S. Clarke and Zalman S. Altschuler},
  year = {1956},
  doi = {10.3133/tei637},
  url = {https://pubs.usgs.gov/publication/tei637},
  note = {Source identifier: tei637}
}