@misc{indiciaeb66b63d96634,
  title = {Summary of work in the mineralogy and petrography of southeast phosphates through April 1952},
  author = {Zalman Samuel Altschuler},
  year = {1952},
  doi = {10.3133/tei266},
  url = {https://pubs.usgs.gov/publication/tei266},
  note = {Source identifier: tei266}
}