TY  - RPRT
TI  - Nitrogen isotopes as indicators of nitrate sources in Minnesota sand-plain aquifers
AU  - Stephen C. Komor
AU  - Henry W. Anderson
PY  - 2005
DO  - 10.1111/j.1745-6584.1993.tb01818.x
UR  - https://pubs.usgs.gov/publication/70018348
ID  - 70018348
ER  -