@misc{indiciae9eb5cd7c9545,
  title = {A constant ratio air-oxygen mixer.},
  author = {P A Drinker and J W Carter and J F Howard and T L Kelley and R S Peterson},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/6072321/},
  note = {Source identifier: 6072321}
}