000 00303nam a2200121Ia 4500
005 20260205062552.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a621.382 Si64C
100 _aSingh, R .P .
245 0 _aCommunication systems
260 _aNew delhi
_bMc Graw hill
_c2010
942 _cBK
999 _c173139
_d173139