000 00291nam a2200109Ia 4500
008 210616s9999 xx 000 0 und d
100 _aGoncalves, Marcus
245 0 _aProtecting your web site with firewalls
260 _c1997
650 _aSoftware Engineering
_bComputer Science
942 _cBK
999 _c3088
_d3088