TY  - RPRT
TI  - Spectrophotometric-isotope dilution determination of arsenic in soils and rock
AU  - F. W. Brown
AU  - F.O. Simon
AU  - L. P. Greenland
PY  - 1975
UR  - https://pubs.usgs.gov/publication/70164422
ID  - 70164422
ER  -