Author: BRECKENRIDGE, F. C. (NATIONAL BUREAU OF STANDARDS)
Title: United States Standard for the Colors of Signal Lights. National Bureau of Standards Handbook 95.
Description: Washington, D. C. National Bureau of Standards. 1964, 1st Edition. Soft cover. 30 double-column pages. Ex-library copy with moderate stamps, no markings on the interior pages. protective stiff paper covers added. PRIC|20.0. Fair.

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