000 00291nam a2200109Ia 4500
008 230222s9999 xx 000 0 und d
100 _aChakravarthy
245 0 _aPrinciples of Digital communication
250 _a1
260 _bDhanpat Rai Publications Pvt Ltd, New Delhi
_c2004
942 _cBK
999 _c3442
_d3442