Waedala Ali W, Ameen E. Effect of using some assistant instrument in order to get the art of accuracy and performance of some basic skills in tennis. RJSS [Internet]. 2006 Dec. 1 [cited 2025 Oct. 2];12(42):294-317. Available from: https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50313