A. . Khan, “School Economics in the National Repository of Open Educational Resources (NROER) An overview of the developmental process”, jie, vol. 40, no. 1, pp. p. 106–117, May 2014, Accessed: Apr. 24, 2025. [Online]. Available: http://14.139.250.109:8090/index.php/jie/article/view/1469