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Title: Silica, hard vacuum, therimionic triode valve: Made by MOV C [Go to resource]
Description: Silica, hard vacuum, therimionic triode valve: Made by MOV CO. NT57 037AM License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1992-425 Go to resource More Like this...
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