548,821 ARWIDSSON HANS Studies on properties of ethyl cellulose films for extended release and their relations to formulation and process factors : [doctoral thesis] / Hans Arwidsson ; Uppsala University, Faculty of Pharmacy. - Uppsala : Academiae Ubsaliensis, 1991. - 52 s. ; wykr. ; 25 cm (Acta Universitatis Upsaliensis : Comprehensive Summaries of Uppsala Dissertations from Faculty of Pharmacy, ISSN 0282-7484 ; 80)