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Title: Electrically maintained tuning fork type A-340-A, no.136312, [Go to resource]
Description: Electrically maintained tuning fork type A-340-A, no.136312, by Muirhead and Co. Ltd. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: tuning Source: Science Museum Creator: Muirhead and Company Limited Identifier: 1989-1158 Go to resource More Like this...
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