ธวัชวิบูลย์ ธ, เฉลิมนิรันดร น. TEACHING SYSTEM OF SANGAD UTRANAN’S ON LEARNING OF MUSIC THEORY OF THE FIRST YEAR AIR MUSIC STUDENTS. AJPU [internet]. 2018 Sep. 13 [cited 2025 Apr. 11];9(2):208-23. available from: https://so01.tci-thaijo.org/index.php/AJPU/article/view/135544