PROCEEDINGS 306.189 Proceedings of the 7th International Congress of Pediatric Otorhinolaryngology, Helsinki, Finland 7-10 June 1998 / ed. by R.J. Ruben and P. Karma. - Shannon : Elsevier Science Ireland Ltd.. - XIV, 336 s. : il., wykr. ; 26 cm. - (International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876 ; vol. 49, suppl. 1) Bibliogr. przy art