000 00354nam a22001457a 4500
008 140422b xxu||||| |||| 00| 0 eng d
020 _a9788126509294
082 _a621.385 BEL-D3
100 _aBellamy, John c
245 _aDigital telephony
250 _a3rd ed.
260 _aNew Delhi
_bWiley India
_c2011
942 _cBK
999 _c22176
_d22176