000 00322nam a2200145Ia 4500
003 BML
020 _a9788120327504
082 _a621.382
_bPRO
100 _aPorakis , John G
245 _aCommunication systems engineering
250 _a2nd.
260 _aNew Delhi
_bPHI Learning
_c2011
300 _a801p.
942 _2ddc
_cBK
999 _c277
_d277