TY  - RPRT
TI  - Nitrate concentrations in Illinois rivers 1967 to 1974: Comparison among reporting agencies
AU  - G.F. McIsaac
AU  - M.B. Short
AU  - G. Groschen
AU  - P. Terrio
PY  - 2007
DO  - 10.1111/j.1752-1688.2004.tb01042.x
UR  - https://pubs.usgs.gov/publication/70026898
ID  - 70026898
ER  -