Ladachar L, Roadrangka V. Exploring the state of teaching and learning about sound in higher secondary schools in Trang (Thai). Asia Pac J Sci Technol [internet]. 2017 Apr. 19 [cited 2026 Feb. 21];13(11):1310-2. available from: https://so01.tci-thaijo.org/index.php/APST/article/view/83490