A platform for research: civil engineering, architecture and urbanism
A fully illustrated description of the underground system recently installed in Berlin. (5000 w.)
Underground conductors for the municipal telephone system of the german post office
Unterirdische Fuhrung von Anschlussleitungen in Stadfernsprechnetzen der Deutschen Reischpost
Zappe, H. (author)
1902
Article (Journal)
German
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