@misc{1168461,
  author = {Donald C Hudson and John W Kumpula},
  title = {Use of ionization chambers in obtaining data on radiation at points within the head during dental x-ray exposure ::progress report},
  year = {1954},
  month = {1954-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.3956},
  language = {en},
}