@misc{indiciae28a81cae0e9d,
  title = {Epithermal gold deposits; Part I},
  author = {Roger P. Ashley and Mortimer H. Staatz and Robert C. Pearson and William C. Bagby},
  year = {1990},
  doi = {10.3133/b1857h},
  url = {https://pubs.usgs.gov/publication/b1857H},
  note = {Source identifier: b1857H}
}