Seetee N, Lamainil S, Dahsah C. THE EFFECT OF ‘WHY FOREST IS IMPORTANT’ ACTIVITIES ON STUDENTS’ ENVIRONMENTAL LITERACY AND ETHICS IN NAN PROVINCE . JEI [internet]. 2025 Sep. 30 [cited 2026 Sep. 29];27(3):156-70. available from: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/279645