Burch, George Edward. <br/><br/>
A primer of electrocardiography / 
by George E. Burch and Travis Winsor. 
 - 4th ed. rev. 
 - Philadelphia :  Lea & Febiger,  [1963] 
<br/><br/> First published in this ed. in 1960. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography.