TY  - RPRT
TI  - Multielement extraction system for the determination of 18 trace elements in geochemical samples
AU  - J. R. Clark
AU  - J.G. Viets
PY  - 2002
DO  - 10.1021/ac00224a017
UR  - https://pubs.usgs.gov/publication/70011761
ID  - 70011761
ER  -