- Project Runeberg -  Kgl. Telegrafverkets apparater 1906 /
N:o 75. Växlar, telegraf-

(1906) Tema: Telecom
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N:o 75. Växlar, telegraf-,

äldre. 6, 8, 10, 12, 16, 20, 25, 30 dl. (Nyströms Telegrafi sid. 33 o. 96.)

Växelproppar, telegraf-, enl. prof.

[ Fotografi ]


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