Grant, Robert P. <br/><br/>
Spatial vector electrocardiography / 
Robert P. Grant. 
 - Philadephia :  Blakiston ;  1951 
 - xiv, 149 p. :  ill. ;  22 cm. 
<br/><br/> Includes bibliographical references.  Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography