000 00271nam a2200121Ia 4500
008 220709s9999 xx 000 0 und d
100 _aHALLBERG,BRUCE
245 0 _aNETWORKING A BEGINNERS GUIDE
250 _a6
260 _bMC-GRAW HILL
300 _a393
942 _cDBK
999 _c81484
_d81484