@misc{indiciae13ecf41ee963,
  title = {Staff report on phosphates},
  author = {Vincent Ellis McKelvey and James Bachelder Cathcart},
  year = {1949},
  doi = {10.3133/tei942},
  url = {https://pubs.usgs.gov/publication/tei942},
  note = {Source identifier: tei942}
}