@misc{1166546,
  author = {Carl W Coblentz and Paul R Achenbach},
  title = {Air delivery and arrestance tests of a "Puritron" air cleaner, model F-20 ::manufactured by Michael Electric Company New Haven, Connecticut},
  year = {1960},
  month = {1960-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.6673},
  language = {en},
}