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 2024 Apr. 29];9(2):208-23. Available from: https://so01.tci-thaijo.org/index.php/AJPU/article/view/135544