A Master Thesis entitled” Athletic Satisfaction and its relationship with Mental Toughness and psychological Flow among Volleyball Players in  the Northern districts - Palestine” (in the Program of Physical Education) by”Khaled Abdel Raheem” will be defended on Sunday 28^thJun.2020,  under the supervision  of ”Prof. Abdel Nasser Qadoumi & Dr. Jamal Shaker” by (10:0 0 ) am in the Korean Institute/B1090