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Title: Alnico telephone receiver magnet, 1938. [Go to resource]
Description: Alnico telephone receiver magnet License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: telephones
permanent magnetsTemporal: 1938 Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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