000
00292nam a2200121Ia 4500
008
211126s9999 xx 000 0 und d
082
_a
621.382
100
_a
T VISWANATHAM
245
0
_a
TELECOMMUNICATIONS SWITCHING SYSTEMS AND NETWORKS
260
_b
P H I
365
_b
250.00
942
_c
ST
999
_c
67705
_d
67705