@misc{indiciaeb4b446cdd18b,
  title = {USGS Mineral Resources Program--Supporting Stewardship of America's Natural Resources},
  author = {Susan J. Kropschot},
  year = {2006},
  doi = {10.3133/cir1289},
  url = {https://pubs.usgs.gov/publication/cir1289},
  note = {Source identifier: cir1289}
}