Lawal, Yazid Rumah, Abdulmumin Abdulsalam Rumah, and Jamilu Amadi. “Utilization of Instructional Materials in Teaching Chemistry in Senior Secondary Schools in Katsina Metropolis”. International Journal of Environment, Agriculture and Biotechnology 5, no. 1 (January 15, 2020). Accessed November 22, 2024. https://journal-repository.com/index.php/ijeab/article/view/1703.