TY  - RPRT
TI  - A manual on fire assaying and determination of the noble metals in geological materials
AU  - Joseph Haffty
AU  - L.B. Riley
AU  - W.D. Goss
PY  - 1977
DO  - 10.3133/b1445
UR  - https://pubs.usgs.gov/publication/b1445
ID  - b1445
ER  -