605,454 FRIEBERG ULLA The endolymphatic duct and sac : an ultrastructural and experimental investigation : [doctoral thesis] / by Ulla Friberg ; Uppsala University, 1985. -48 s. ; 24 cm (Acta Universitatis Upsaliensis : Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 0282-7476 ; 16) ISBN 91-554-1785-X