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Title: Cooke and Wheatstone's ABC telegraph transmitter, 1840 [Go to resource]
Description: Cooke and Wheatstone's ABC telegraph transmitter, 1840 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1840 Source: Science Museum Identifier: 1884-102 Go to resource More Like this...
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