Breckenridge, F.
and Vaughan, R.
(1956),
Visual ranges of four obstruction lights:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.RPT.4659 (Accessed May 11, 2026)
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Visual ranges of four obstruction lights:
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- NBS report ; 4659
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NBS report ; 4659
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NIST Pubs
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Created January 1, 1956, Updated May 19, 2023