@misc{indiciaeea91da308d5c,
  title = {Stream-sediment and panned-concentrate geochemical surveys for gold in Precambrian rock, western Grand Canyon, Arizona},
  author = {K. J. Wenrich and B.S. VanGosen and G. H. Billingsley and J.C. Antweiler},
  year = {1992},
  doi = {10.3133/ofr92591b},
  url = {https://pubs.usgs.gov/publication/ofr92591B},
  note = {Source identifier: ofr92591B}
}