Uboh DE, Udofia SE, Abasi AU, Harrison VE. Instructional Materials, Students’ Achievement and Retention in Physics in Abak Local Government Area, Akwa Ibom State, Nigeria. JRES [Internet]. 2026 Feb. 10 [cited 2026 Feb. 15];17(1):1-11. Available from: https://icidr.org.ng/index.php/Jres/article/view/1847