TY  - RPRT
TI  - Oxygen isotopes in nitrate: New reference materials for 18O:17O:16O measurements and observations on nitrate-water equilibration
AU  - J.K. Böhlke
AU  - S.J. Mroczkowski
AU  - T.B. Coplen
PY  - 2003
DO  - 10.1002/rcm.1123
UR  - https://pubs.usgs.gov/publication/70025139
ID  - 70025139
ER  -