@misc{indiciaedffc8fbf4779,
  title = {Differential density of ground water in ore deposition},
  author = {Edwin T. McKnight},
  year = {1942},
  doi = {10.2113/gsecongeo.37.5.424},
  url = {https://pubs.usgs.gov/publication/70213063},
  note = {Source identifier: 70213063}
}