@misc{indiciae7f0c72e2289d,
  title = {Rare metals; Iron and manganese},
  author = {Frank L. Hess and Thomas Leonard Watson},
  year = {1913},
  doi = {10.3133/b530c},
  url = {https://pubs.usgs.gov/publication/b530C},
  note = {Source identifier: b530C}
}