Lawal, Yazid Rumah, Abdulmumin Abdulsalam Rumah, and Jamilu Amadi. 2020. “Utilization of Instructional Materials in Teaching Chemistry in Senior Secondary Schools in Katsina Metropolis”. International Journal of Environment, Agriculture and Biotechnology 5 (1). https://journal-repository.com/index.php/ijeab/article/view/1703.