000 00285nam a2200133Ia 4500
008 230321s9999 xx 000 0 und d
082 _bPAT
100 _aPatten, Karen
245 0 _aData Networking Made Easy
250 _a
260 _bFirewall
_c2004
300 _a345
942 _cBK
999 _c4890
_d4890