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Date: 2013-06-19 05:50:34United Kingdom Colossus computer Lorenz cipher Heath Robinson Vacuum tube Transformer types Bombe Transformer Alan Turing Cryptography Bletchley Park Espionage | The rebuilding of Heath Robinson. By Tony SaleAdd to Reading ListSource URL: www.codesandciphers.org.ukDownload Document from Source WebsiteFile Size: 175,81 KBShare Document on Facebook |