@misc{indiciae7a26022f4bd7,
  title = {The gold pan: A neglected geological tool},
  author = {J.B. Mertie},
  year = {1954},
  doi = {10.2113/gsecongeo.49.6.639},
  url = {https://pubs.usgs.gov/publication/70206782},
  note = {Source identifier: 70206782}
}