@misc{indiciaea1def3e9d207,
  title = {Tin and tungsten deposits of Silver Hill, Spokane County, Washington},
  author = {L. R. Page},
  year = {1941},
  doi = {10.3133/ofr4112},
  url = {https://pubs.usgs.gov/publication/ofr4112},
  note = {Source identifier: ofr4112}
}