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ทองพันธ์ก, ชัยชมชื่นส, แสนราชจ. THE DEVELOPMENT OF ONLINE-ACTIVITY BASED LEARNING SYSTEM ACCORDING TO R2D2 MODEL AND INTEGRATED WITH CREATING OF KNOWLEDGE MAP FOR DEVELOP TO ENHANCE TEACHER COMPETENCY. J. IND. EDUC. [Internet]. 2016Apr.29 [cited 2020Jul.13];15(1):91-7. Available from: https://ph01.tci-thaijo.org/index.php/JIE/article/view/122267