000 00302nam a2200109Ia 4500
008 170101s1996 xx 000 0 und d
100 _aHALSALL
245 0 _aDATA COMMUNICATION COMPUTERS NETWORK & OPERATING SYSTEM
260 _aNEW DELHI
_bPEARSON EDUCATION
_c1996
650 _aCSE
942 _2ddc
_cBK
_01
999 _c27349
_d27349