000 00284nam a2200109Ia 4500
008 230303s9999 xx 000 0 und d
041 _aeng
082 _a621.382 TOM
245 _aElectronic Communication Systems : Fundamentals through
260 _aNEW DELHI
_bPEARSON
365 _cRS
999 _c184097
_d184097