000			00424nam a2200145Ia 4500
008			180713s9999 xx 000 0 und d
082			_a621.388 5 C1
100			_a"Couch, Leon W "
245		0	_aDigital and Analog Communication Systems
260			_aLondon
260			_b Dorling Kindersley
260			_c2014
365			_b779
942			_cBK
999			_c112790 _d112790