000			00354nam a22001337a 4500
020			_a9781259004605
082			_222 _a621.382
100			_aSingh, R.P and Sapre, S.A.
245			_aCommunication systems : _banalog and digital /
250			_a3rd.
260			_aNew Delhi, _bMcGraw Hill, _cc2012.
300			_axix, 750p. _bill. ; _c23 cm.
942			_2ddc _cEE
999			_c1107 _d1107