@misc{indiciae9db7594c9594,
  title = {Personal size-separating impactor for sampling microbiological aerosols.},
  author = {J M Macher and H C Hansson},
  year = {1987},
  doi = {10.1080/15298668791385354},
  url = {https://pubmed.ncbi.nlm.nih.gov/3618478/},
  note = {Source identifier: 3618478}
}