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Background and objectives of the U.S. Standard for the colors of signal lights:

Published

Author(s)

F C Breckenridge
Citation
- NBS RPT 6413
Report Number
NBS RPT 6413

Citation

Breckenridge, F. (1959), Background and objectives of the U.S. Standard for the colors of signal lights:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.RPT.6413 (Accessed April 17, 2024)
Created January 1, 1959, Updated May 19, 2023