000 00314nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a681.31
_bSTA
100 _aStallings, William
245 0 _aData and computer communications
250 _aEd.5
260 _aNew Delhi
_bPrince Hall of India
_c1997
942 _cBK
999 _c41321
_d41321