00478nam a2200157Ia 4500008004100000020001800041082001400059100002300073245006000096250000800156260004200164300002400206500001900230600002100249650005000270240925s9999    xx            000 0 und d  a9788131761755  a005.8 STA  aStallings, William 0aNetwork Security Essentials: applications and standards  a4th  aNew Delhi:bPearson Educationc,2011.  a341p.bNAfOriginal  aIncludes Index  aComputer Science  aComputer science, information & general works