@misc{indiciae093b005df883,
  title = {Respirator efficiency measurement using quantitative DOP man tests.},
  author = {E C Hyatt and J A Pritchard and C P Richards},
  year = {1972},
  doi = {10.1080/0002889728506721},
  url = {https://pubmed.ncbi.nlm.nih.gov/4512979/},
  note = {Source identifier: 4512979}
}