@misc{indiciae1e16077dc5e9,
  title = {U.S. Geological Survey Trace Elements and related reports through 1954},
  author = {Harriet G. Brown Smith and Virginia K. Blatcher},
  year = {1955},
  doi = {10.3133/tei500},
  url = {https://pubs.usgs.gov/publication/tei500},
  note = {Source identifier: tei500}
}