@misc{indiciaee580a29550b6,
  title = {Map showing gold determined by atomic absorption and spectrographically determined silver in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska},
  author = {Richard D. Koch and Raymond L. Elliott and M. J. Diggles},
  year = {1978},
  doi = {10.3133/ofr7873g},
  url = {https://pubs.usgs.gov/publication/ofr7873G},
  note = {Source identifier: ofr7873G}
}