000 00408nam a2200157Ic 4500
003 OSt
005 20250121011515.0
008 240520s9999 xx 000 0 und d
020 _a745806139
040 _cDLC
100 1 _aMuffic, Sead
245 1 0 _aSecurity mechanism for computer networks /
_cSead Muffic
264 1 _aEngland
_bJohn Wiley & Sons
_c1989
300 _a195p.; ill.; 24cm
942 _cBK
_2lcc
999 _c13042
_d13042