543,384 LUNDH BJÖRN On the normal scalar ECG /electrocardiogram/ : a new classification system considering age, sex and heart position / by Björn Lundh ; from the Departments of Clinical Physiology [etc.] — Lund : Universitatis Gothorum Carolinae, 1984. - 147 s. : il. ; 25 cm (Acta Medica Scandinavica, ISSN 0365-463X suppl. 691)