@misc{indiciaede1904f5a7d8,
  title = {A proposed national mineral-resource assessment - A plan to assess the nonfuel mineral resources of the United States and its public lands},
  author = {R.B. McCammon and J.A. Briskey},
  year = {1992},
  doi = {10.1007/bf01782691},
  url = {https://pubs.usgs.gov/publication/70016340},
  note = {Source identifier: 70016340}
}