Singudom, Thongchai, and Phramaha Somsak Satisompanno. 2021. “PREVENTION AND SURVEILLANCE OF NARCOTICS PROBLEMES IN BORDER AREAS BY LOEI LOCAL ADMINISTRATIVE OGANIZATIONS”. Journal of MCU Social Science Review 10 (1). Ayutthaya, Thailand:137-48. https://so03.tci-thaijo.org/index.php/jssr/article/view/249947.