000			00375nam a2200169Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
100			_aRonayne John.
245		0	_aThe integrated services digital network.
260			_aNULL
260			_bWheeler Publishing.
260			_c1993
300			_a230p.
365			_b150
650			_aETC
942			_cDBK
999			_c22934 _d22934