PRACE DOKTORSKIE - SZWECJA 605,614 BERNE BERIT Ultraviolet radiation, vitamin A and the skin : photodynamic studies on natural and synthetic retinoids : [thesis]/ Berit Berne ; Uppslla University. - Uppsala : University, 1988. - 45 s. : wykr. ; 23 cm (Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine ISSN 0282-7476 ; 151) ISBN 91-554-2197-0