000			00331nam a22001337a 4500
999			_c181298 _d181298
003			OSt
005			20210402020028.0
008			190604b ||||| |||| 00| 0 eng d
020			_a9780070667556
100			_aFRENZEL, LOUIS E.
245			_aPRINCIPLES OF ELECTRONIC COMMUNICATIONS SYSTEMS
260			_bTMH
942			_2ddc _cBK _037