@misc{indiciaec36f53a57303,
  title = {Geochemical prospecting abstracts through June 1952},
  author = {John Warvelle Harbaugh},
  year = {1953},
  doi = {10.3133/b1000a},
  url = {https://pubs.usgs.gov/publication/b1000A},
  note = {Source identifier: b1000A}
}