@misc{indiciae93a55de444d2,
  title = {Combustion tube method for measurement of nitrogen isotope ratios using calcium oxide for total rmoval of carbon dioxide and water},
  author = {Carol Kendall and E. Grim},
  year = {2002},
  doi = {10.1021/ac00204a019},
  url = {https://pubs.usgs.gov/publication/70016230},
  note = {Source identifier: 70016230}
}