JONA, E [Mitral disorders with secondary pulmonary insufficiency: the epicardial phonocardiogram]. [electronic resource] - Atti della Societa italiana di cardiologia 1959 - Comunicazioni 478-80 p. digital Publication Type: Journal Article ISSN: 0081-069X Subjects--Topical Terms: PhonocardiographyPulmonary Valve Insufficiency