@misc{indiciae54a3660c4022,
  title = {Map showing spectrographically determined chromium 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/ofr7873h},
  url = {https://pubs.usgs.gov/publication/ofr7873H},
  note = {Source identifier: ofr7873H}
}