@misc{indiciae9d3e828238a6,
  title = {Ultra-clean air.},
  author = {M Laurence},
  year = {1983},
  doi = {10.1302/0301-620x.65b4.6874705},
  url = {https://pubmed.ncbi.nlm.nih.gov/6874705/},
  note = {Source identifier: 6874705}
}