000 00363nam a2200157Ia 4500
005 20220120120029.0
008 220120b |||||||| |||| 00| 0 eng d
020 _a9788120322295
082 _a621.381 SCH
100 _aSCHWEBER WILLIAM
245 _aELECTRONIC COMMUNICATION SYSTEM
250 _a4
260 _bPHI
_c2008
650 _aECE
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942 _cBK
999 _c3832
_d3832