Pocket reference for ECGs made easy / 
Aehlert,Barbara 
 - 3rd ed.- 
 - st louis:  Mosby elsevier,  2006. 
 - v, 152p.:  ill.;  18 cm. 
<br/><br/> book 
<br/><br/><label>ISBN: </label>9780323039703 
<br/><br/><label>LC Class. No.: </label>RC683.5  / .A39 2006