@misc{indiciae5e46eeeef4ea,
  title = {A manual on fire assaying and determination of the noble metals in geological materials},
  author = {Joseph Haffty and L.B. Riley and W.D. Goss},
  year = {1977},
  doi = {10.3133/b1445},
  url = {https://pubs.usgs.gov/publication/b1445},
  note = {Source identifier: b1445}
}