Kandangama, K.G.C. “CHALLENGES AND BARRIERS FOR IMPLEMENTING EDUCATION FOR SUSTAINABLE DEVELOPMENT (ESD) IN SECONDARY SCHOOLS IN SRI LANKA”. Proceedings of the International Conference on Future of Education 1, no. 1 (November 1, 2018): 1–7. Accessed December 21, 2024. https://tiikmpublishing.com/proceedings/index.php/foe/article/view/138.