000 00360nam a2200133Ia 4500
008 220217s9999||||xx |||||||||||||| ||und||
020 _a81-203-1118-3
082 _a005.71 GUP
100 _aGupta, Prakash, C
245 0 _aData communication
260 _aPrentice hall of india
_bNew Delhi
_c2002
300 _b450
650 _aDATA COMMUNICATION
_91124
999 _c170056
_d170056