SHAHIDA BIBI, ABDUL REHMAN, MUHAMMAD HASHIM. SECURITY THREATS AND THE CONCENTRATION OF LEARNING ACTIVITIES IN CLASSROOMS OF BACHA KHAN UNIVERSITY STUDENTS CHARSADDA. Pakistan Journal of Educational Research , [S. l.], v. 6, n. 3, 2023. DOI: 10.52337/pjer.v6i3.905. Disponível em: https://pjer.org/index.php/pjer/article/view/905. Acesso em: 1 aug. 2026.