000 00243nam a2200121Ia 4500
082 _a621.39
_bBAL
100 _aBELLAMY JOHN C.
245 0 _aDIGITAL TELEPHONY
250 _a3
260 _bWILEY INDIA PVT. LTD.
300 _a0
942 _cREF
999 _c80219
_d80219