- Inventory number: 950426
- Call number: 940,548641
- Author number: C 718
- Author: Colossus
- Title: The serets of Bletchley parks codebreaking computer/B.Jack Gpeland
- Place of publication and publisher: New york: oxford
- Publication date: 2006
- Subject: 1-Lorenz cipher system
- Subject: 2-worldwar 1939-1945-cryptography
- Subject: Electronic intellgence -Great Britain 3-world war,1939-1945
- Subject: 4-Cryptography-Germany-History
- Subject: 5-Cryptography-Great britain-History I.CopeLand,B.Jack,1950
- Pages: 462
- Number of copies: 1
- Language: العربية
- Type: ك
- Notes: مكتبة د. احمد الجلبي
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