The effectiveness of the developed principal’s courses in Babylon Governorate from the point of view of school principals. Al-Adab Journal, [S. l.], v. 1, n. 137, p. 349–366, 2021. DOI: 10.31973/aj.v1i137.1084. Disponível em: https://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/1084.. Acesso em: 6 may. 2024.