In order to facilitate planning of new railway telephone installations, survey of different telephone systems made by Telefonaktiebolaget L.M. Ericsson for railways is given as well as their practical application by different railway administrations.
Telephone in service of railways
Ericsson Rev
Ericsson Review ; n 4
1937
8 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
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