TY  - RPRT
TI  - Geochemical method of prospecting for ore deposits
AU  - E.A. Sergeev
AU  - V.P. Sokoloff
PY  - 1941
DO  - 10.3133/ofr4821b
UR  - https://pubs.usgs.gov/publication/ofr4821B
ID  - ofr4821B
ER  -