000 00283nam a2200121Ia 4500
008 230303s9999 xx 000 0 und d
041 _aeng
082 _a621.385 BEL
100 _aBellamy (John.G)
245 _aDigital Telephony
260 _aNEW DELHI
_bWiley India
365 _cRS
999 _c205175
_d205175