Stephens, R.
(1942),
Circular of the Bureau of Standards no. 437::optical and mechanical characteristics of 16-millimeter motion-picture projectors, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.CIRC.437
(Accessed March 13, 2025)
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Circular of the Bureau of Standards no. 437::optical and mechanical characteristics of 16-millimeter motion-picture projectors
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- NBS CIRC 437
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NBS CIRC 437
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NIST Pubs
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Created January 1, 1942, Updated May 19, 2023