000
00234 a2200097 4500
020
_a
9780070591172
245
_a
Digital communication
_c
Amitabha Bhattacharya
260
_b
TMH
_c
2011
300
_a
516p.
100
_a
Bhattacharya Amitabha
_9
373
999
_c
688
_d
688