TY  - RPRT
TI  - Copper toxicity and organic matter: Resiliency of watersheds in the Duluth Complex, Minnesota, USA
AU  - Nadine M. Piatak
AU  - Robert R. Seal
AU  - Perry M. Jones
AU  - Laurel G. Woodruff
PY  - 2015
UR  - https://pubs.usgs.gov/publication/70193301
ID  - 70193301
ER  -