Juma Hamza Al-Shaheen I, Aziz K. Administrative diseases of secondary school principals from the point of view of physical education teachers in the city of Mosul. RJSS [Internet]. 2023 Nov. 1 [cited 2025 Oct. 2];26(83):190-209. Available from: https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50542