@misc{indiciae2521bc81baa0,
  title = {Preliminary map of cobalt occurrences in the conterminous United States},
  author = {M. P. Foose and David R. McQueen},
  year = {1980},
  doi = {10.3133/ofr79576j},
  url = {https://pubs.usgs.gov/publication/ofr79576J},
  note = {Source identifier: ofr79576J}
}