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008			171212s9999||||xx |||||||||||||| ||und||
020			_a0-13-032822-7
082			_a621.382
245			_aAnalog And Digital Communication Systems
250			_a2
260			_aNULL _bPrentice-Hall _c0
300			_axvi505
500			_a5005
650			_aAnalog Electronic Systems
942			_cDB
999			_c15029 _d15029