000
00294nam a2200121Ia 4500
008
211126s9999 xx 000 0 und d
082
_a
621.382
100
_a
THIAGARJAN
245
0
_a
TELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
260
_b
P.H.I
365
_b
275.00
942
_c
BTECH
999
_c
141796
_d
141796