TY  - RPRT
TI  - Reaffirming the consistency of the original stock of NBS 19 limestone and its byproduct with finer grain size for δ13C and δ18O calibrations—Both distributed internationally
AU  - Haiping Qi
AU  - Tyler B. Coplen
AU  - Lauren T Reid
AU  - Stanley J. Mroczkowski
PY  - 2026
DO  - 10.1002/rcm.70131
UR  - https://pubs.usgs.gov/publication/70277804
ID  - 70277804
ER  -