@misc{indiciaebe57ad8378f8,
  title = {Introduction. Gold and silver},
  author = {C. W. Hayes and Waldemar Lindgren and Hiram Dryer McCaskey and F. C. Schrader and Hoyt S. Gale and William H. Emmons and F.B. Weeks and J. S. Diller and G.F. Kay},
  year = {1908},
  doi = {10.3133/b340a},
  url = {https://pubs.usgs.gov/publication/b340A},
  note = {Source identifier: b340A}
}