000 00304nam a2200121Ia 4500
008 211209s1998 xx 000 0 und d
041 _aeng
082 _a004.6 N98 GUP
100 _aGUPTA, PRAKASH C
245 _aDATA COMMUNICATIONS
260 _aNEW DELHI
_bPRENTICE-HALL OF INDIA
_c1998
300 _a475
999 _c33338
_d33338