AYUBA SHUAIBU. INFLUENCE OF SOCIAL STUDIES TEACHERS MASTERY OF THE SUBJECT MATTER ON STUDENTS’ PERFORMANCE IN KADUNA STATE, NIGERIA. African Journal of Humanities and Contemporary Education Research , [S. l.], v. 3, n. 1, p. 44–50, 2022. Disponível em: https://publications.afropolitanjournals.com/index.php/ajhcer/article/view/81. Acesso em: 27 oct. 2026.