Telephone Operator's Electronic Keysender S538406 (Keypad) & S538407 (Sender)
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb1837-des/dca/des/dca/30/7/1972/20
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- ReferenceGB 1837 DES/DCA/30/7/1972/20
- Dates of Creation1972
- Language of MaterialEnglish
- Physical Description2 prints, 3 slides