Dr. Samir Khalaf Jary, & Dr. Kadhim Abd Almhsin Khalaf. (2022). THE VERTICAL AND HORIZONTAL DISTANCE OF THE STARTING POINT AND THE BALL AND RELATIONSHIP TO THE SPEED AND ACCURACY SKILL OF SMASH SERVE IN VOLLEYBALL. ResearchJet Journal of Analysis and Inventions, 3(05), 102–109. https://doi.org/10.17605/OSF.IO/8362R