000			00383nam a2200181Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
082			_a621.382
100			_aFrenzel L. E.
245		0	_aCommunication electronics
250			_a3RD Ed.
260			_bMcgraw Hill
260			_c2001
300			_a532p.
365			_b894.44
650			_aETC
942			_cTEQUIP
999			_c2021 _d2021