000
00297nam a2200121Ia 4500
008
220201s1990 xx 000 0 eng d
082
_a
4
_b
BAL
100
_a
Balagurusamy,E.
245
0
_a
Computer system and application
260
_a
delhi
_b
Tata Mcgraw hill
_c
1990
300
_a
664
942
_2
ddc
999
_c
33688
_d
33688