Thomas, S <br/><br/>
ECG File. First and second degree heart block.  [electronic resource] 

 -  Nursing standard (Royal College of Nursing (Great Britain) : 1987)   
 - 40 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0029-6570 
<br/><br/><label>Standard No.: </label>10.7748/ns.5.4.40.s43  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography<br/>Heart Block--diagnosis<br/>Humans