@misc{indiciaef363e3583a41,
  title = {Stable hydrogen and oxygen isotope ratios for selected sites of the U.S. Geological Survey's NASQAN and benchmark surface-water networks},
  author = {Tyler B. Coplen and Carol Kendall},
  year = {2000},
  doi = {10.3133/ofr00160},
  url = {https://pubs.usgs.gov/publication/ofr00160},
  note = {Source identifier: ofr00160}
}