TY  - RPRT
TI  - Automated determination of total selenium in rocks, soils, and plants
AU  - Paul H. Briggs
AU  - J.G. Crock
PY  - 1986
DO  - 10.3133/ofr8640
UR  - https://pubs.usgs.gov/publication/ofr8640
ID  - ofr8640
ER  -