TY  - RPRT
TI  - Surface water supply of the United States, 1918, Part V, Hudson Bay and upper Mississippi River basin
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1921
DO  - 10.3133/wsp475
UR  - https://pubs.usgs.gov/publication/wsp475
ID  - wsp475
ER  -