Asogwa VC, Isiwu EC, Ugwuoke CU. Effect of instructional materials on students’ academic achievement in fishery in senior secondary schools . Gl Jnl Educ Res [Internet]. 2021 Dec. 14 [cited 2026 Sep. 1];20(2):153-61. Available from: https://www.ajol.info/index.php/gjedr/article/view/218878