%0 Journal Article %A D G Gibson %A D J Coltart %T Haemodynamic effects of practolol. %D 1972 %R 10.1136/hrt.34.1.95 %J British Heart Journal %P 95-99 %V 34 %N 1 %U https://heart.bmj.com/content/heartjnl/34/1/95.full.pdf