@misc{indiciaea1e83229e78f,
  title = {Geochemical data from Precambrian meta-iron-formation and related rocks of the Keystone area, South Dakota},
  author = {William H. Raymond},
  year = {1981},
  doi = {10.3133/ofr81772},
  url = {https://pubs.usgs.gov/publication/ofr81772},
  note = {Source identifier: ofr81772}
}