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Title: Marconiphone moving-coil loudspeaker, with built-in mains en [Go to resource]
Description: Marconiphone moving-coil loudspeaker, with built-in mains energizing unit, c. 1928 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1970-654 Go to resource More Like this...
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