TY  - RPRT
TI  - Hydrologic Unit Map-1974, State of North Dakota
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1976
DO  - 10.3133/hu34
UR  - https://pubs.usgs.gov/publication/hu34
ID  - hu34
ER  -