00483nam a2200157Ia 4500008004100000020001800041082001400059100002300073245006300096250000800159260003800167300002400205500001900229600002700248650005000275240925s9999    xx            000 0 und d  a9788131761663  a005.8 STA  aStallings, William 0aCryptography and Network Security: principles and practice  a5th  aIndia:bPearson Educationc,2011.  a1319p.b0fOriginal  aIncludes Index  aEngineering Technology  aComputer science, information & general works