@misc{indiciae6f04f931d1b9,
  title = {Comparative study of two hand-held respirators.},
  author = {J F Morris and W E Robertson and F L Glauser},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/4921572/},
  note = {Source identifier: 4921572}
}