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Lectures and lectures on various scientific topics: vol. 10

Contains among other things: Africa in the Age of Imperialism (especially South Africa, German colonies) o.Dat. The Politics of England in Canada, Australia, India and Europe after 1776, 1952 Chinese Boxer Uprising The French Revolution and the Eu...

In: Lectures - Lectures - General observations on historical science and world history >> Lectures and lectures on various scientific topics

Wireless (spark) telegraphy, connections with foreign countries. - Activity of the company for wireless telegraphy GmbH ("Telefunken"): Vol. 34

Contains among other things: Trials of the Telefunkengesellschaft against the company Huth because of patent infringements, 1913 range attempts of the Telefunken-Gesellschaft from Nauen to Togo and Sayville (near New York), Nov. 1913 equipment of ...

In: Wireless Telegraphy (Spark Telegraphy) >> Activity of German telegraph companies >> Wireless (spark) telegraphy, connections with foreign countries. - Activity of the Company for Wireless Telegraphy Ltd ("Telefunken")