@misc{indiciae25fdbf545390,
  title = {Obsidian hydration dates glacial loading?},
  author = {I. Friedman and K. L. Pierce and J. D. Obradovich and W.D. Long},
  year = {1973},
  doi = {10.1126/science.180.4087.733},
  url = {https://pubs.usgs.gov/publication/70010935},
  note = {Source identifier: 70010935}
}