RT Journal Article SR Electronic T1 THE SIGNIFICANCE OF THE DIRECTION OF THE P WAVE IN DEXTROCARDIA AND ISOLATED LÆVOCARDIA JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 481 OP 488 DO 10.1136/hrt.14.4.481 VO 14 IS 4 A1 Campbell, Maurice A1 Reynolds, Geoffrey YR 1952 UL http://heart.bmj.com/content/14/4/481.abstract AB