000 00310nam a2200133Ia 4500
100 _aKennedy,George
020 _a0-07034054-4
250 _a3rd
942 _cBK
245 _aElectronic comunication systems
260 _aTata McGraw Hill, New Delhi
_c1991
082 _a621.380413 Ken
300 _axxii;741
999 _c15864
_d15864