00313nam a2200121Ia 4500008004100000020001500041041001200056100001200068245004800080260003900128300000800167650001600175221030s9999    xx            000 0 und d  a8131764527  aEnglish  aITL ESL 0aCryptography & Network Securitycby ITL ESL  bPearson EdcuationaNew Delhic2012  a188  aBE Computer