Underwood, Donald A. <br/><br/>
Clinical electrocardiography :  self-assessment and review / 
by Donald A. Underwood 
 - Philadelphia :  W. B. Saunders,  1993 
 - 310 p. :  ill. ;  22 cm. 
<br/><br/><label>ISBN: </label>0721666922 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography--Examinations, questions, etc.