000 00265pam a2200109a 44500
008 230405s2011 xxu||||| |||| 00| 0 eng d
041 _aENG
100 _aJohn Bellamy
245 _aDigital Telephony
260 _anew delhi
_bWiley India Ltd.
_c2011
906 _a15596
999 _c306095
_d306095