TY - JOUR T1 - UNIPOLAR ELECTROCARDIOGRAPHY IN PULMONARY STENOSIS JF - British Heart Journal JO - Heart SP - 89 LP - 101 DO - 10.1136/hrt.13.1.89 VL - 13 IS - 1 AU - R. M. Marquis Y1 - 1951/01/01 UR - http://heart.bmj.com/content/13/1/89.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -