Armstrong, Michael L. <br/><br/>
Electrocardiograms ;  a systematic method of reading them / 
by Michael L. Armstrong 
 - 5th ed. with a foreword by Serge Barold 
 - Bristol :  John Wright,  1985 
 - 308 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0723603537 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography
<br/><br/><label>National Library of Medicine Call No.: </label>WG140  / .A737e 1974