Title: Quan hệ ngoại giao của triều Nguyễn nửa đầu thế kỷ 19
Description: Diplomatic relations of the Nguyen Dynasty in the first half of the 19th century.
Subjects: Foreign relations, History, Diplomatic relations, Nguyễn Dynasty (Vietnam)
Places: Vietnam
Time periods: 19th century, Nguyễn dynasty, 1802-1945