MUDE MUDE; KENEI, R. K. .; GITHUI, K. . INFLUENCE OF PRINCIPALS’ PROVISION OF OPPORTUNITIES FOR PROFESSIONAL DEVELOPMENT ON TEACHER PERFORMANCE IN PUBLIC SECONDARY SCHOOLS IN SAKU SUB-COUNTY, MARSABIT COUNTY, KENYA. African Journal of Emerging Issues, [S. l.], v. 5, n. 12, p. 73–86, 2023. Disponível em: https://www.ajoeijournals.org/sys/index.php/ajoei/article/view/468. Acesso em: 22 jun. 2025.