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Actions	Details Remove from selection Add to selection Title Thermionic Valves 1904-1954 Reference UK0108 NAEST 185 Date 1955 Scope and Content One book, "Thermionic Valves 1904-1954" Exent 1 book Language English. Subject Thermionic valves Level of description sub-fonds Hierarchy browser 110000001 NATIONAL ARCHIVE FOR ELECTRICAL SCIENCE AND TECHNOLOGY contains 322 parts UK0108 NAEST 185 Thermionic Valves 1904-1954

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