TY  - RPRT
TI  - Determination of the delta(15N/14N)of Ammonium (NH4+) in Water: RSIL Lab Code 2898
AU  - Janet E. Hannon
AU  - John Karl Böhlke
PY  - 2008
DO  - 10.3133/tm10c15
UR  - https://pubs.usgs.gov/publication/tm10C15
ID  - tm10C15
ER  -