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Title: Miniature power supply, +9 volt and -9 volt, type 122 [Go to resource]
Description: Miniature power supply, +9 volt and -9 volt, type 122.311, by Unilab, Blackburn, England License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1974 Source: Science Museum Creator: Unilab (maker) Identifier: 1987-335 Go to resource More Like this...
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