TY  - RPRT
TI  - Why are freshwater fish so threatened?
AU  - Gerard P. Closs
AU  - Paul L. Angermeier
AU  - William R.T. Darwall
AU  - Stephen R. Balcombe
PY  - 2015
DO  - 10.1017/cbo9781139627085
UR  - https://pubs.usgs.gov/publication/70174114
ID  - 70174114
ER  -