00333nam a2200133Ia 4500003000400000008004100004020002600045040000800071100001800079245004600097260002900143300001500172365001200187LDD181029s9999    xx            000 0 und d  a9780387405339cE80.95  cLDD  aVacca, John R 0aPractical internet securitycJohn R Vacca  aNew YorkbSpringerc2007  axxi, 536p.  bE 80.95