TY  - RPRT
TI  - Long-term changes in nitrate conditions over the 20th century in two Midwestern Corn Belt streams
AU  - Valerie J. Kelly
AU  - Edward G. Stets
AU  - Charles G. Crawford
PY  - 2015
DO  - 10.1016/j.jhydrol.2015.03.062
UR  - https://pubs.usgs.gov/publication/70162084
ID  - 70162084
ER  -