000 00261nam a2200109Ia 4500
020 _a9780070667556
100 _aFRENZEL LOUIS.F
_9748
245 _aPRINCIPLES OF ELECTRONIC COMMUNICATION SYSTEMS
250 _a3
260 _c2008
_bTATA MCGRAWHILL
490 _aP1617
999 _c1651
_d1651