000 00299nam a2200121Ia 4500
008 250523s9999 xx 000 0 und d
100 _aStallings, William
245 0 _aBusiness Data Communications
260 _bPearson Eduction
_aNew Delhi
300 _a659
650 _aEngineering
942 _cBK
999 _c15490
_d15490