000 00295nam a2200121Ia 4500
008 161018s9999 xx 000 0 und d
100 _aVijayakumari,G.
_911268
245 _aTelecommunication Switching & Networks
250 _a1Ed
260 _bAR Publication
300 _bRs:130
490 _a9942
999 _c9942
_d9942