TY  - RPRT
TI  - Potentiometric-surface map of water in the Fox Hills-Lower Hell Creek aquifer in the Northern Great Plains area of Montana
AU  - Gary W. Levings
PY  - 1982
DO  - 10.3133/ofr82564
UR  - https://pubs.usgs.gov/publication/ofr82564
ID  - ofr82564
ER  -