305,230 JANATUINEN MARTTI Surgery for aortic valve disease : a clinical study with special reference to the Bjork-Shiley titling disc valve / by Martti Janatuinen -, from the Department of Surgery, University of Turku. - Turku : University, 1991. - 56 s. i il. ; 24 cm (Scandinavian Journal of Thoracic and Cardiovascular Surgery, ISSN 0036-5580 -, suppl. 39) ISBN 952-90-3391-5