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Date: 2013-07-22 08:48:53Science Charles Wheatstone David Edward Hughes Concertina Electrical telegraph Wireless telegraphy Samuel Morse Wheatstone Hughes Telegraphy Technology Science and technology in the United Kingdom | PICA, Page 41 David Edward Hughes: Concertinist and Inventor1 DAN M. WORRALLAdd to Reading ListSource URL: www.concertina.orgDownload Document from Source WebsiteFile Size: 578,02 KBShare Document on Facebook |