TY  - RPRT
TI  - Hydrologic Unit Map -- 1974, State of Missouri
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/hu25
UR  - https://pubs.usgs.gov/publication/hu25
ID  - hu25
ER  -