Centralized traffic control, type K, class M, coded system.
Title:
Centralized traffic control, type K, class M, coded system.
Author:
General Railway Signal Company.
Corporate Author:
Publication Information:
Rochester, N.Y., [publisher not identified], 1948.
Physical Description:
171 pages : illustrations (part folded).
General Note:
Fold. illus. in pocket.
Language:
English
Format :
Book