@misc{indiciaed8b61b117160,
  title = {A particle detector for use in ventilation engineering.},
  author = {R P Clark},
  year = {1973},
  doi = {10.1017/s0022172400046568},
  url = {https://pubmed.ncbi.nlm.nih.gov/4518357/},
  note = {Source identifier: 4518357}
}