00769nam a2200217 a 4500 1/35353 080909s2000 enkf b 001 0 eng d 0385495323 37867 DLC GR-PeUP 652.8 SIN Singh, Simon. The code book : the science of secrecy from ancient Egypt to quantum cryptography / Simon Singh. New York : Anchor Books, 2000. xvi, 411 σ. : εικ. ; 21 εκ. Περιέχει ευρετήριο. Cryptography History. Ciphers History. Confidential communications. INST UNIPILB MAIN 20080909 652.8 SIN 00156252 00156252 LOAN 0 1 /webopac/covers/02/37867_0385495323.jpg