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Title: Thermionic Pentode Valve Raytheon CK507AX, (VTB) [Go to resource]
Description: Thermionic Pentode Valve Raytheon CK507AX, (VTB), c. 1950 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1950 Source: Science Museum Identifier: 1994-48 Go to resource More Like this...
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