000 00324pam a2200121a 44500
008 160422s9999 xx 000 0 und d
041 _aEnglish
082 _a004.65 MAI
100 _aMairs, John
245 _aVPNs : a beginner's guide
260 _aNew Delhi
_b McGraw-Hill Publishing
_c2002
650 _aComputer Networking
999 _c87018
_d87018