Duffin, E G <br/><br/>
A 24-channel electrocardiographic preamplifier.  [electronic resource] 

 -  Medical & biological engineering  Jul 1971 
 - 389-91 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0025-696X 
<br/><br/><label>Standard No.: </label>10.1007/BF02474094  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Amplifiers, Electronic<br/>Electrocardiography--instrumentation<br/>Electronics, Medical