000
00261nam a2200109Ia 4500
008
220201s1993 xx 000 0 eng d
100
_a
TIWANA A B
245
2
_a
A TO Z OF PC VIRUS PROTECTION
260
_a
DELHI
_b
KHANNA PUB
_c
1993
300
_a
168
942
_2
ddc
999
_c
91854
_d
91854