Two-way communication carried on between moving and stationary telephone station; description of system. See Engineering Index 1929, p. 1554. (See also Can. Ry. and Mar. World, no. 387, May 1930, pp. 286-289, 2 figs.)
Telephoning from and to moving train on Canadian National Railways
Ry. Age
Railway Age ; 88 , n 15
1930
2 pages
Article (Journal)
English
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