@misc{1167711,
  author = {C W Coblentz and W F Goddard},
  title = {Air filter systems for Army aircraft ::progress report for calendar year, 1956},
  year = {1957},
  month = {1957-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.5260},
  language = {en},
}