000 00294nam a2200121Ia 4500
008 180304s9999 xx 000 0 und d
020 _a9789332518582
100 _aLeon W. Couch
245 0 _aDigital and Analog communication Systems 8th Ed.
260 _bPearson
365 _b819
942 _cBK
999 _c3927
_d3927