000			00298nam a2200133Ia 4500
008			220613s9999||||xx |||||||||||||| ||und||
100			_aM Aebi
245		2	_aA O Ashif Principles in Spine Surgery
250			_a1998
260			_bSpringer
300			_a243
650			_aOrthopedics
942			_cSURG
999			_c8624 _d8624