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Title: Primax moving iron loudspeaker, c 1924. [Go to resource]
Description: Primax loud speaker (sectioned), c.1924 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: loudspeakers Temporal: 1924 Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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