000			00397nam a2200193Ia 4500
008			240530s9999 xx 000 0 und d
082			_a621.382
082			_bCAR
100			_aCARLSON A B
245		0	_aCOMMUNICATION SYSTEM
250			_n0
250			_n1986
260			_bM.H.I.
300			_a686
365			_b268
650			_aELECTRONICS
942			_cREF
950			_CELECTRONICS
999			_c191635 _d191635