@misc{indiciae1ff34ae1b659,
  title = {Trace Elements Investigations Report No. 122},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1950},
  doi = {10.3133/tei122},
  url = {https://pubs.usgs.gov/publication/tei122},
  note = {Source identifier: tei122}
}