TY  - RPRT
TI  - Montana ground-water quality
AU  - R. F. Ferreira
AU  - M. R. Cannon
AU  - R. E. Davis
AU  - Federick Shewman
AU  - J.L. Arrigo
PY  - 1987
DO  - 10.3133/ofr87736
UR  - https://pubs.usgs.gov/publication/ofr87736
ID  - ofr87736
ER  -