000 00345nam a2200133Ia 4500
005 20260413100736.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aCouch Leon W
245 0 _aDigital And Analog Communication System
260 _bDelhi pearson Education
_c2009
300 _a749
942 _cGB
999 _c4229
_d4229