@misc{indiciae7cd38a232642,
  title = {Nickel deposits near Riddle, Douglas County, Oregon},
  author = {W. T. Pecora and S. W. Hobbs},
  year = {1941},
  doi = {10.3133/ofr417},
  url = {https://pubs.usgs.gov/publication/ofr417},
  note = {Source identifier: ofr417}
}