Author: BERGER, K.,
Title: Das gleichzeitige Telegraphieren und Fernsprechen und das Mehrfachfernsprechen.
Description: Braunschweig, Vieweg, 1910. VIII+116 pp. With 111 figs. Index. Hardcover. Or.maroon cloth with gilt lettering. (Ex-lib.copy: label to spine and stamp to title). VG/--.

Keywords: Postal history telecommunication. Technics technology engineering. Germany General world global . 1910


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