Phunorn K, Buranarugsa R. DEVELOPMENT OF BADMINTON BASIC SKILLS DEVICE TESTING BY USING ELECTRONIC SYSTEM FOR GRADE 9 STUDENTS OF BAN KHANUN SCHOOL NONG NA KHAM DISTRICT KHON KAEN PROVINCE . JILS [internet]. 2020 Dec. 24 [cited 2026 Sep. 12];14(2):1-15. available from: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/241576