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Seulement les descriptions de haut niveau Technologie de la communication
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LEWIS, Dr Wilfrid Bennett (1908-1987)
LEWIS, Dr Wilfrid Bennett (1908-1987)
Post Office (Telecommunications) Registered Files: Minuted Papers
Post Office (Telecommunications) Registered Files: Minuted Papers
Commonwealth Telecommunications Organisation
Commonwealth Telecommunications Organisation
Post Office: Factories Department
Post Office: Factories Department
Central administration records of the Post Office Telegraph and Telephone Service
Central administration records of the Post Office Telegraph and Telephone Service
GLOBE TELEGRAPH AND TRUST COMPANY LIMITED
GLOBE TELEGRAPH AND TRUST COMPANY LIMITED
INTERNATIONAL SUBMARINE TELEGRAPH MEMORIAL
INTERNATIONAL SUBMARINE TELEGRAPH MEMORIAL
LEVER, Capt George Harold (1892-1973)
LEVER, Capt George Harold (1892-1973)
CHERRY, Colin (1914-1979)
CHERRY, Colin (1914-1979)
Chelsea College Department of Electrical Engineering Records
Chelsea College Department of Electrical Engineering Records