Columbia subject headings:
China--Foreign relations--Vietnam.
Guangxi Zhuangzu Zizhiqu (China)--Boundaries--Vietnam--History.
Vietnam--Boundaries--China--Guangxi Zhuangzu Zizhiqu--History.
Harvard subject headings:
China--Foreign relations--Vietnam
Guangxi Zhuangzu Zizhiqu (China)--Boundaries--Vietnam--History.
Vietnam--Boundaries--China--Guangxi Zhuangzu Zizhiqu--History.
Princeton subject headings: