000
00270nam a2200109Ia 4500
008
220201s2001 xx 000 0 eng d
100
_a
Kennedy George & Bernard
245
0
_a
Electronic communication
260
_b
Tata Mc Graw Hill
_c
2001
300
_a
763
942
_2
ddc
999
_c
87113
_d
87113