Nguyễn N, Nguyen Y. The security and defense policy of King Minh Mang towards the Southwest border region (1820-1840). VNUHCM Journal of Social Sciences and Humanities [Internet]. 30Sep.2024 [cited 6Jul.2025];8(3):2621-3. Available from: https://stdjssh.scienceandtechnology.com.vn/index.php/stdjssh/article/view/991