@misc{indiciae68403ef6a102,
  title = {Interpreting pan-concentrate analysis of stream sediments in geochemical exploration for gold},
  author = {Richard Philip Fischer and Frederick S. Fisher},
  year = {1968},
  doi = {10.3133/cir592},
  url = {https://pubs.usgs.gov/publication/cir592},
  note = {Source identifier: cir592}
}