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Gutachten Hugo Koch, RMVP, zu pro-Astrologie-Politik der PPK,...
www.polunbi.de
Gutachten Dr. Hugo Koch, Abteilung Schrifttum der RSK, gegen Karl Heinz Hederichs← Engagement für die Astrologie in seiner Arbeit für die PPK.←.
Germans employ Enigma coding machine for the first time - HISTORY
www.history.com
On this day in 1940, the Germans set up two-way radio communication in their newly occupied French territory, employing their most sophisticated coding machine,
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