McGuinness, J. <br/><br/>
Disorders of the cardiac rate and rythm  [sound recording]. 

 - Chelmsford :  Royal College of General Practitioners, Medical Recording Service,  1966. 
 - Its Medical Recording Service ;  66-21 .
 - Royal College of General Practitioners. Medical Recording Service ;  Royal College of General Practitioners. Medical Recording Service ;  66-21. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arrhythmia.<br/>Heart beat.