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Blakes Mikrophon Querschnitt. Motiv Blakes Mikrophon Querschnitt Bearbeitung Agon Buchholz asb Meyers de Wdwd CommonsHelper br Meyers Konversationslexikon von ca author PDMeyers Original upload log page de BlakesMikrophonQuerschnitt Asb bytes no History of telephony Images from Meyers Konversationslexikon th edition text