@misc{indiciae06867537ffbc,
  title = {Numerical list of U.S. Geological Survey Trace Elements Reports to April 30, 1953},
  author = {Virginia K. Blatcher and Jane H. Wallace},
  year = {1953},
  doi = {10.3133/tei325},
  url = {https://pubs.usgs.gov/publication/tei325},
  note = {Source identifier: tei325}
}