000 003840000a22001570004500
020 _a0074603396
041 _aEnglish
082 _a621.382
_bS35
100 _aSapre, S D
245 _aCommunication systems
_banalog and digital
260 _aNew Delhi
_bTata McGraw-Hill
_c2000
300 _aXII 592
650 _aCommunication
650 _acommunication Engineering
700 _aSingh, R P
942 _cLM
999 _c10981
_d10981