TY  - RPRT
TI  - Water resources data for Michigan, water year 1971; Part 2, Water quality records
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1972
DO  - 10.3133/wdrmi712
UR  - https://pubs.usgs.gov/publication/wdrMI712
ID  - wdrMI712
ER  -