000 00420nam a2200193Ia 4500
008 240220s9999 xx 000 0 und d
041 _aENG
082 _a621.38
100 _aSingh R. P.
245 0 _aCommunication systems
260 _aNew Delhi
260 _bTata Mcgraw Hill Publishing Co.Ltd
260 _c2005
300 _a592p.
365 _b235
650 _aETC
700 _aSapre S. D.
942 _cBB
999 _c322
_d322