Palasan, Papatsara, Chutima Tassaro, and Nongnaphat Makchoochit. “The Effect of Using Instructional Set of Science Learning Subject Group on Topics of Environment and Local Natural Resources for Primary 6 Students, Schools in the Phupavaree Network Group, La-Ngu District Satun Province”. Princess of Naradhiwas University Journal of Humanities and Social Sciences 9, no. 2 (July 13, 2022): 18–38. Accessed February 2, 2023.