@misc{indiciae96719c283ef4,
  title = {International strategic minerals inventory summary report; rare-earth oxides},
  author = {W.D. Jackson and Grey Christiansen},
  year = {1993},
  doi = {10.3133/cir930n},
  url = {https://pubs.usgs.gov/publication/cir930N},
  note = {Source identifier: cir930N}
}