@misc{indiciaee0783c19fcbd,
  title = {Upper Triassic volcanogenic Zn-Pb-Ag(-Cu-Au) mineral deposits near Petersburg, Alaska},
  author = {Henry C. Berg and Donald G. Grybeck},
  year = {1980},
  doi = {10.3133/ofr80527},
  url = {https://pubs.usgs.gov/publication/ofr80527},
  note = {Source identifier: ofr80527}
}