@misc{indiciae27b5f5e5083f,
  title = {High Vacuum Pressure Control Apparatus.},
  author = {T L Ho},
  year = {1931},
  doi = {10.1073/pnas.17.9.548},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587662/},
  note = {Source identifier: 16587662}
}