000 00321nam a2200133Ia 4500
008 170807s9999 xx 000 0 und d
020 _a9789332518865
100 _aStallings, W.
245 0 _aData and Computer Communications
250 _a9 th
260 _aDelhi
_bPerson Education
_c2011
300 _a864
942 _cBK
999 _c3713
_d3713