TY  - RPRT
TI  - Combined use of 15N and 18O of nitrate and 11B to evaluate nitrate contamination in groundwater
AU  - R. L. Seiler
PY  - 2005
DO  - 10.1016/j.apgeochem.2005.04.007
UR  - https://pubs.usgs.gov/publication/70027819
ID  - 70027819
ER  -