@misc{indiciaed65d21a6a2f0,
  title = {Compilation of field methods used in geochemical prospecting by the U.S. Geological Survey},
  author = {Hubert William Lakin and Frederick Norville Ward and Hy Almond},
  year = {1952},
  doi = {10.3133/cir161},
  url = {https://pubs.usgs.gov/publication/cir161},
  note = {Source identifier: cir161}
}