@misc{indiciae1861ef11e25a,
  title = {An ARC/Info point coverage of Mineral Resource Data System (MRDS) locations in eleven western states},
  author = {David G. Frank},
  year = {1999},
  doi = {10.3133/ofr99169},
  url = {https://pubs.usgs.gov/publication/ofr99169},
  note = {Source identifier: ofr99169}
}