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  1. Flechtner, Hans Joachim [Author]

    Carl Duisberg : eine Biographie

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    Düsseldorf: Econ-Verlag, 1981

    Published in: Econit

  2. Flechtner, Hans Joachim [Author]

    Grundbegriffe der Kybernetik : eine Einführung

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    Stuttgart: Wiss. Verl. Ges., 1966

    Published in: Bücher der Zeitschrift Naturwissenschaftliche Rundschau

  3. Flechtner, Hans Joachim [Author]

    Selbstbesinnung der Philosophie

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    Innsbruck: Wagner, 1941