TY - BOOK AU - Symon L. TI - Advances and technical standards in neurosurgery SN - 3211823832 U1 - WL610 PY - 1993/// CY - Wein PB - Springer - Verlag KW - Nervous System Diseases -- surgery KW - Neurosurgery KW - Neurosurgical Procedures N2 - Neurosurgical Procedures, Neurosurgery, Nervous System Diseases -- surgery ER -