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Title: Cryselco triode, with Admiralty logo and interservice cap, m [Go to resource]
Description: Cryselco triode, with Admiralty logo and interservice cap, marked "Patt. No. 5197 Valve No. R5" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1985-51 Go to resource More Like this...
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