TY  - RPRT
TI  - Nitrate Loads and Concentrations in Surface-Water Base Flow and Shallow Groundwater for Selected Basins in the United States, Water Years 1990-2006
AU  - Norman E. Spahr
AU  - Neil M. Dubrovsky
AU  - JoAnn M. Gronberg
AU  - O. Lehn Franke
AU  - David M. Wolock
PY  - 2010
DO  - 10.3133/sir20105098
UR  - https://pubs.usgs.gov/publication/sir20105098
ID  - sir20105098
ER  -