Gertsch, Marc, 1936- The ECG : a two-step approach to diagnosis / Marc Gertsch ; foreword by Cristopher Cannon - Berlin : Springer-Verlag, 2004 - xxxiv, 615 p . : ill. ; 25 cm. ISBN: 3540008691 (hc.) RM243.26 Subjects--Topical Terms: Electrocardiography--MethodsArrhythmia--DiagnosisHeart diseases--Diagnosis National Library of Medicine Call No.: WG140