@misc{1193436,
  author = {Nolan D Mitchell and Edward D Bender and James V Ryan},
  title = {Fire resistance of shutters for moving-stairway openings:},
  year = {1952},
  month = {1952-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.BMS.129},
  language = {en},
}