@misc{indiciae3ec07aaf1e36,
  title = {Gas bubbles in fossil amber as possible indicators of the major gas composition of ancient air},
  author = {R.A. Berner and Gary P. Landis},
  year = {1988},
  doi = {10.1126/science.239.4846.1406},
  url = {https://pubs.usgs.gov/publication/70014314},
  note = {Source identifier: 70014314}
}