Aehlert, Barbara ECGs made easy pocket reference - St. Louis, Mo. Mosby 2002 - 183 p. : ill. (col.) : 19 cm. ISBN: 032301433X (pbk) Subjects--Topical Terms: Electrocardiography--Heart diseases--Rhythms--Ventricular --Sinus mechanisms--IIMC Dewey Class. No.: 616.12 / AEH