James, T N <br/><br/>
Changing concepts in electrocardiography.  [electronic resource] 

 -  Modern concepts of cardiovascular disease  Oct 1970 
 - 129-32 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0026-7600 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography<br/>Heart--physiopathology<br/>Heart Block--diagnosis<br/>Humans