Kennedy, Richard J. Textbook of vectorcardiography / [by] Richard J. Kennedy, Philip Varriale [and] Joseph C. Alfenito. - [1st ed.]. - New York : Medical Dept., Harper & Row, [1970] Includes bibliographies. LCCN: 78106339 Subjects--Topical Terms: Vectorcardiography. LC Class. No.: RC683.5.V4 / K46 Dewey Class. No.: 616.1/2/0754