000 00289nam a2200121Ia 4500
999 _c29126
_d29126
020 _a9788178083285
100 _aLeon W Couch II.
245 _aDigital and Analog Communication Systems
250 _a6
260 _c2002
_bPEARSON EDUCATION ASIA
_aDelhi
300 _axxv+758
942 _cBB