Littmann, David. <br/><br/>
Textbook of electrocardiography / 
by David Littmann. 
 - New York :  Harper & Row,  1972. 
 - 553 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0061415448 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography.