000 00303nam a2200121Ia 4500
008 220201s1990 xx 000 0 eng d
082 _a0
_bAGG
100 _aAggarwal ,Arun Kumar aur others /
245 0 _aComputer Praveshika /
260 _bVishwavidyala Prakashan
_c1990
300 _a190
942 _2ddc
999 _c6722
_d6722