312,268 INTERNATIONAL Xllth International Congress of Head and Neck Radiology, XVII Congress of the European Society of Neuroradiology, 1st Congress of the World Federation of Interventional and Therapeutic Neuroradiology October 6-13 1991, Zurich, Switzerland /Congress President: A. Valavanis ; org. comm, chairman: A. Valavanis [et al] ; Scientific Program Comm. - Chairmen G. du Boulay [et al]. - Berlin [etc]. : Springer-Veri., [1991]. - 263, [1] s. : il. ] 30 cm (Neuroradiology, ISSN 0028-3940 ; vol. 33, suppl.)