@misc{indiciaebe5fc029a4f7,
  title = {Principles of geochemical prospecting},
  author = {H. E. Hawkes},
  year = {1957},
  doi = {10.3133/b1000f},
  url = {https://pubs.usgs.gov/publication/b1000F},
  note = {Source identifier: b1000F}
}