TY  - RPRT
TI  - Chemical and biological status of lakes and streams in the upper midwest: assessment of acidic deposition effects
AU  - J.G. Wiener
AU  - J.M. Eilers
PY  - 1987
DO  - 10.1080/07438148709354792
UR  - https://pubs.usgs.gov/publication/70007043
ID  - 70007043
ER  -