000 00325nam a2200121Ia 4500
008 250409s9999 xx 000 0 und d
020 _a81-203-2454-4
082 _a621.382
_bSCH
100 _aSchweber, William
245 0 _aElectronic communication systems 4/E with CD
260 _aVidhyanagar
_bPHI
_c2002
365 _a375/-
999 _c253771
_d253771