Centralized traffic control, type F, class M, duplex, coded system description of circuits.
Title:
Centralized traffic control, type F, class M, duplex, coded system description of circuits.
Author:
General Railway Signal Company.
Corporate Author:
Publication Information:
Rochester, N.Y. : General railway signal company [1937]
[©1937]
Physical Description:
165 pages including frontispiece, illustrations : plates, diagrams (part folded) ; 23 cm
General Note:
"Handbook 15 ... March, 1937."
Language:
English
Format :
Book