000 00285nam a2200109Ia 4500
008 230411s9999 xx 000 0 und d
082 _a621.3815
_bCOU
100 _a COUCH (LEON W.)
245 0 _aDigital and Analog Communication Systems
260 _b PEARSON
_a New Delhi
942 _cBK
999 _c2384
_d2384