@misc{indiciaed5a8fed2afeb,
  title = {Major carbon-14 deficiency in modern snail shells from southern Nevada springs},
  author = {A.C. Riggs},
  year = {1984},
  doi = {10.1126/science.224.4644.58},
  url = {https://pubs.usgs.gov/publication/70013901},
  note = {Source identifier: 70013901}
}