Automatic crossing protection at railway crossings. Aug.: A.R.A. reports on revision of R.S.A. specification 6518; typical circuits for power interlockings. (See also - vol. 24 no. 4, Apr. 1927, pp. 711-720)
Committee III -- Power interlocking
Am. Ry. Assn., Signal Sec. -- Proc
1927
68 pages
8 Figs.
Aufsatz (Zeitschrift)
Englisch
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Committee III -- Power interlocking
Engineering Index Backfile | 1926
|Engineering Index Backfile | 1939
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