000 00255nam a2200097Ia 4500
008 231013s9999 xx 000 0 und d
090 _a005.4
100 0 _aMac Mahon, R.A
245 0 0 _aEssentials Microsoft Windows XP
260 3 _aNew Jersey
_bPrentice Hall
_c2003
999 _c7889
_d7889