@misc{indiciae5f73f268a2f9,
  title = {Anomalous concentrations of several metals in iron-formation of the Blue Lead Mountain area, Pennington County, South Dakota},
  author = {William H. Raymond and Robert Ugstad King and James Jennings Norton},
  year = {1975},
  doi = {10.3133/cir707},
  url = {https://pubs.usgs.gov/publication/cir707},
  note = {Source identifier: cir707}
}