000
00298nam a2200121Ia 4500
008
211126s9999 xx 000 0 und d
082
_a
621.38216
100
_a
T.VISWANATHAN
245
0
_a
TELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
260
_b
P.H.I
365
_b
150.00
942
_c
BTECH
999
_c
136000
_d
136000