@misc{indiciae578ae56cabc7,
  title = {Revising U.S. Geological Survey mineral-resource assessment methods},
  author = {Lawrence J. Drew},
  year = {1998},
  doi = {10.3133/70220366},
  url = {https://pubs.usgs.gov/publication/70220366},
  note = {Source identifier: 70220366}
}