O'Rourke, R A <br/><br/>
Extra heart sounds--what do they mean?  [electronic resource] 

 -  Medical times  Aug 1971 
 - 188 passim p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0025-7583 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diagnosis, Differential<br/>Heart Auscultation<br/>Heart Diseases--diagnosis