000
00273nam a2200109Ia 4500
008
220201s9999 xx 000 0 eng d
100
_a
VISHA NATHAN (THIAGRAGAIM)
245
0
_a
TELECOMMUNICATION & NETWORK SWITCHING SYSTEM
250
_a
13TH
260
_b
PHI
942
_2
ddc
999
_c
98330
_d
98330