Le VA. A STUDY OF THE CHARACTERISTICS OF VIETNAMESE MAPS IN THE 19th CENTURY WITH SPECIAL REFERENCE TO HOÀNG LÊ CẢNH HƯNG BẢN ĐỒ. JSTLU-B. 2023;1(2):60-69. Accessed November 21, 2024. https://science.thanglong.edu.vn/index.php/volb/article/view/30