@misc{indiciae3a3f25cd32ef,
  title = {Cobalt in the United States (material compiled up to 1963)},
  author = {John Stewart Vhay},
  year = {1979},
  doi = {10.3133/ofr791436},
  url = {https://pubs.usgs.gov/publication/ofr791436},
  note = {Source identifier: ofr791436}
}