Laoburan T. THE DEVELOPMENT OF THE SOCIAL STUDIES TEACHERS CHARACTERISTICS INDICATORS IN 21ST CENTURY IN NAKHON RATCHASIMA PRIMARY EDUCATIONAL SERVICE AREA OFFICE 7. JMND [internet]. 2020 Oct. 28 [cited 2025 Dec. 8];7(10):314-26. available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/247537