@misc{indiciae90028ba11e08,
  title = {The fluorometirc determination of aluminum in phosphate rock with 8-hydroxyquinoline},
  author = {F. S. Grimaldi and Harry Levine},
  year = {1950},
  doi = {10.3133/tei60},
  url = {https://pubs.usgs.gov/publication/tei60},
  note = {Source identifier: tei60}
}