000 00315nam a2200121Ia 4500
008 241013s9999 xx 000 0 und d
020 _a9798122415833
100 _aGnanasivam P.
245 0 _aTelecommunication Switching and Networks
260 _bCharotar Publishing House
_c2011
300 _axxiv,444
942 _cBK
999 _c4739
_d4739