TY  - RPRT
TI  - Long-term decreases in phosphorus and suspended solids, but not nitrogen, in six upper Mississippi River tributaries, 1991–2014
AU  - Rebecca Kreiling
AU  - Jeffrey N. Houser
PY  - 2016
DO  - 10.1007/s10661-016-5464-3
UR  - https://pubs.usgs.gov/publication/70174673
ID  - 70174673
ER  -