@misc{indiciae1aab7d724c13,
  title = {U.S. Geological Survey Mineral Resources Program - Science Supporting Mineral Resource Stewardship},
  author = {S.J. Kropschot},
  year = {2007},
  doi = {10.3133/fs20073035},
  url = {https://pubs.usgs.gov/publication/fs20073035},
  note = {Source identifier: fs20073035}
}