000 00409nam a2200133Ia 4500
008 210917s9999 xx 000 0 und d
082 _a621.38 .S1
100 _aSchweber, William
245 0 _aElectronic Communication System
260 _aNew Delhi
260 _b Prentice Hall of India
260 _c2002
942 _cCD
999 _c153568
_d153568