@misc{indiciaee143d619ac37,
  title = {Manganese resources of the Olympic Peninsula, Washington, a preliminary report},
  author = {C. F. Park},
  year = {1942},
  doi = {10.3133/b931r},
  url = {https://pubs.usgs.gov/publication/b931R},
  note = {Source identifier: b931R}
}