Schamroth, Leo. <br/><br/>
An introduction to electrocardiography / 

 - 5th ed. 
 - Oxford :  Philadelphia :  Blackwell Scientific Publications ;  distributed by J. B. Lippincott,  1976. 
 - xii, 240 p.   ill.  
<br/><br/><label>ISBN: </label>0632084405 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography.
<br/><br/><label>LC Class. No.: </label>MED RC683.5  / .E5S32