TY  - RPRT
TI  - Geohydrology of the Madison and associated aquifers in parts of Montana, North Dakota, South Dakota, and Wyoming
AU  - J. S. Downey
PY  - 1984
DO  - 10.3133/pp1273g
UR  - https://pubs.usgs.gov/publication/pp1273G
ID  - pp1273G
ER  -