TY  - RPRT
TI  - An alternative regionalization scheme for defining nutrient criteria for rivers and streams
AU  - Dale M. Robertson
AU  - David A. Saad
AU  - Ann M. Wieben
PY  - 2001
DO  - 10.3133/wri014073
UR  - https://pubs.usgs.gov/publication/wri014073
ID  - wri014073
ER  -