@misc{indiciaeaa4dd21eddac,
  title = {Analyses of rock and stream-sediment samples, Mount Zirkel Wilderness and Northern Park Range vicinity, Jackson and Routt counties, Colorado},
  author = {George L. Snyder and R.T. Hopkins and J. A. Domenico and J. G. Frisken and J. Mitchell},
  year = {1981},
  doi = {10.3133/ofr81186},
  url = {https://pubs.usgs.gov/publication/ofr81186},
  note = {Source identifier: ofr81186}
}