TY  - RPRT
TI  - Quality of surface waters of the United States, 1969, Parts 4 and 5, St. Lawrence River basin and Hudson Bay and Upper Mississippi River basins
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1974
DO  - 10.3133/wsp2144
UR  - https://pubs.usgs.gov/publication/wsp2144
ID  - wsp2144
ER  -