TY  - RPRT
TI  - Water-quality trends in U.S. rivers, 2002 to 2012: Relations to levels of concern
AU  - Megan E. Shoda
AU  - Lori A. Sprague
AU  - Jennifer C. Murphy
AU  - Melissa L. Riskin
PY  - 2019
DO  - 10.1016/j.scitotenv.2018.09.377
UR  - https://pubs.usgs.gov/publication/70200339
ID  - 70200339
ER  -