[1]
Dr. Abeer Dakhil, A.A.- ridha D.S.Q. 2020. Effect of using flat hierarchical method on some aspects of muscular strength and straight serve skill for nascent tennis players. Modern Sport. 19, 2 (Nov. 2020), 0008. DOI:https://doi.org/10.54702/msj.2020.19.2.0008.