000 00301nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.382
100 _aRoy Blake
245 0 _aElectronic Communication Systems 2nd Ed
250 _a2
260 _bCengage Learning, New Delhi
_c2016
942 _cBK
999 _c33690
_d33690