Pothasin, V. ., Chanpan, A. . and Moonsarn, N. . (2022) “Development of Lesson Handouts about Senior Scout’s Badges Mattayomsuksa 3, Sanpatong Wittayakom School, The Secondary Educational Service Area Office 34”, PAYAP UNIVERSITY JOURNAL, 32(1), pp. 1–18. doi: 10.14456/pyuj.2022.1.