@misc{indiciaef78b2596626c,
  title = {A preliminary report on the copper-cobalt deposits of the Quartzburg district, Grant County, Oregon},
  author = {John Stewart Vhay},
  year = {1960},
  doi = {10.3133/ofr60143},
  url = {https://pubs.usgs.gov/publication/ofr60143},
  note = {Source identifier: ofr60143}
}