Colors of signal lights
Subtitle: their selection, definition, measurement, production, and use
By: [by] F. C. Breckenridge.
Series: National Bureau of Standards monograph 75; NBS monograph ;; 75.
Publisher: U.S. Dept. of Commerce, National Bureau of Standards; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1967
Place of publication: Washington
Language: eng
Number of pages: 55
Subjects: Signal lights.; Colors.
Notes: Bibliography: p. 48-49.