@misc{indiciae46e7b80f4d51,
  title = {Cobalt-bearing manganese deposits of Alabama, Georgia, and Tennessee},
  author = {W. G. Pierce and A.E. Engel},
  year = {1943},
  doi = {10.3133/ofr4344},
  url = {https://pubs.usgs.gov/publication/ofr4344},
  note = {Source identifier: ofr4344}
}