@misc{indiciae410697054123,
  title = {Strategic and critical minerals in the midcontinent region, United States},
  author = {Warren C. Day and Diane E. Lane},
  year = {1992},
  doi = {10.3133/b1989},
  url = {https://pubs.usgs.gov/publication/b1989},
  note = {Source identifier: b1989}
}