@misc{indiciae1575ab3cb078,
  title = {International strategic minerals inventory summary report: platinum-group metals},
  author = {David M. Sutphin and Norman J. Page},
  year = {1986},
  doi = {10.3133/cir930e},
  url = {https://pubs.usgs.gov/publication/cir930E},
  note = {Source identifier: cir930E}
}