Ploss, W R <br/><br/>
A practical stethoscope approximator.  [electronic resource] 

 -  Anesthesiology  Mar 1969 
 - 334 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0003-3022 
<br/><br/><label>Standard No.: </label>10.1097/00000542-196903000-00024  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Auscultation--instrumentation<br/>Humans