000 00291nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Stallings, W."
245 0 _aData and Computer communication
260 _bPHI Learning Pvt. Ltd
260 _c2001
365 _b250.00
942 _cBK
999 _c140948
_d140948