YANKAH A.C. 550,010 CARDIAC Cardiac valve allografts 1962-1987 : current concepts on the use of aortic and pulmonary allografts for heart valve substitutes : Proceedings of the Symposium... Berlin (West) September 7-9, 1987 / A.C. Yankah [et al] eds. - Darmstadt : Steinkopff Verl. ; New York : Springer-Verl., 1988. - XVI, 394 s. : il., wykr. ; 25 cm ISBN 3-7985-0754-6 Steinkopff ISBN 0-387-91313-0 Springer