000 00321nam a2200145Ia 4500
008 230912s9999 xx 000 0 und d
082 _a621.385 BEL
100 _aBellamy, John C.
245 0 _aDigital Telephony
250 _aIII
260 _aNEW DELHI
260 _bJOHN WILEY
260 _c2007
300 _axxv,643
999 _c30842
_d30842