A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Automatic multiple telephone switchboards
Describes the apparatus of five leading systems. (6000 w.) (No. 21243 D)
Automatic multiple telephone switchboards
Describes the apparatus of five leading systems. (6000 w.) (No. 21243 D)
Automatic multiple telephone switchboards
Les Commutateurs telephoniques multiples a Fonctionnement automatique
Chignaterie, P. (author)
1911
Ills.
Article (Journal)
French
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