Angcorum, Phramaha Chettha. 2013. “Curriculum Development on Tracking the Lava, Studying Dipterocarp Forest at Khao Kradong National Park, Buriram Province for Matthayomsuksa 2 Students in the Substance Science Learning Group at the Secondary Educational Service Area Office 32”. Journal of MCU Social Science Review 2 (1). Ayutthaya, Thailand:24-41. https://so03.tci-thaijo.org/index.php/jssr/article/view/245248.