@misc{indiciae2f945bd5aba9,
  title = {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},
  author = {Haiping Qi and Tyler B. Coplen and Lauren T Reid and Stanley J. Mroczkowski},
  year = {2026},
  doi = {10.1002/rcm.70131},
  url = {https://pubs.usgs.gov/publication/70277804},
  note = {Source identifier: 70277804}
}