TY  - RPRT
TI  - Supplemental arsenic data for selected streams in the Missouri River basin, Montana, 1987
AU  - J. R. Knapton
AU  - T.M. Brosten
PY  - 1987
DO  - 10.3133/ofr87697
UR  - https://pubs.usgs.gov/publication/ofr87697
ID  - ofr87697
ER  -