Mitchell, N.
, Bender, E.
and Ryan, J.
(1952),
Fire resistance of shutters for moving-stairway openings:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.BMS.129
(Accessed October 15, 2024)
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Fire resistance of shutters for moving-stairway openings:
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- NBS BMS 129
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NBS BMS 129
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NIST Pubs
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Created January 1, 1952, Updated May 19, 2023