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Chaytaveep T, Chonllawit D. Effectiveness of A Concept Attainment Mode with Graphic Organizers on Learning Achievement of Thai Language Principles on Thai Parts of Speech through of Prathomsuka IV Students. IARJ [internet]. 2023 Apr. 15 [cited 2026 Sep. 11];3(2):569-86. available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/266795