Columbia subject headings:
Buddhism--Vietnam.
Christianity--Vietnam--History.
Confucianism--Vietnam.
Taoism--Vietnam.
Vietnam--Church history.
Vietnam--Religion.
Harvard subject headings:
Buddhism--Vietnam
Christianity--Vietnam--History.
Church history.
Confucianism--Vietnam.
Taoism--Vietnam.
Vietnam--Church history.
Vietnam--Religion--History.
Princeton subject headings: