TY  - RPRT
TI  - Mineral commodity profiles: Silver
AU  - W. C. Butterman
AU  - Henry E. Hilliard
PY  - 2005
DO  - 10.3133/ofr20041251
UR  - https://pubs.usgs.gov/publication/ofr20041251
ID  - ofr20041251
ER  -