Kelkay AD, Sitotaw C. The effect of practical work to enhance ninth grade achievement in biology class: The case of diaspora secondary school, Ethiopia. GJGC [Internet]. 2019 Dec. 31 [cited 2024 Apr. 20];9(3):95-105. Available from: https://un-pub.eu/ojs/index.php/gjgc/article/view/4253