TY  - RPRT
TI  - Hydrology and water quality of the copper-nickel study region, northeastern Minnesota
AU  - Donald I. Siegel
AU  - Donald W. Ericson
PY  - 1980
DO  - 10.3133/ofr80739
UR  - https://pubs.usgs.gov/publication/ofr80739
ID  - ofr80739
ER  -