000
00248 a2200109 4500
020
_a
8120311183
082
_a
004.6/.7 GUP
245
_a
Data Communications
_c
Prakash C Gupta
260
_b
PHI
_c
c1996
300
_a
xiii,475p
100
_a
Gupta Prakash C
999
_c
1423
_d
1423