TY  - RPRT
TI  - A field method for the determination of silver in soils and rocks
AU  - H. M. Nakagawa
AU  - H. W. Lakin
PY  - 1965
DO  - 10.3133/ofr65182
UR  - https://pubs.usgs.gov/publication/ofr65182
ID  - ofr65182
ER  -