@misc{indiciae09fe65967baa,
  title = {The U.S.G.S. phosphate-fluoride-iodate method for the determination of very small amounts of thorium in naturally occurring materials},
  author = {F.S. Crimaldi and J.G. Fairchild},
  year = {1949},
  doi = {10.3133/70094925},
  url = {https://pubs.usgs.gov/publication/70094925},
  note = {Source identifier: 70094925}
}