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Sprossenrad leibniz. Der Ursprung der Rechenmaschine das Sprossenrad Handskizze von Leibniz Wilberg Ernst Eberhard 'Die Leibniz'sche Rechenmaschine und die JuliusUniversitt in Helmstedt' Braunschweig Creator Gottfried Wilhelm Leibniz PDold original upload log All user names refer to de Wernerroth bytes no Ernst Eberhard 'Die