@misc{indiciaee3385a66b2ba,
  title = {A variable pattern respirator with phased sampling device.},
  author = {J CLUTTON-BROCK},
  year = {1957},
  doi = {10.1093/bja/29.11.517},
  url = {https://pubmed.ncbi.nlm.nih.gov/13489111/},
  note = {Source identifier: 13489111}
}