TY - JOUR T1 - Break dancing: the need for supervision. JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 91 LP - 91 DO - 10.1136/bjsm.20.2.91-a VL - 20 IS - 2 AU - S R Johnson AU - D G Jones Y1 - 1986/06/01 UR - http://bjsm.bmj.com/content/20/2/91.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -