Columbia subject headings:
Library of Congress--Catalogs.
Vietnam--Bibliography--Catalogs.
Vietnamese imprints--Catalogs.
Harvard subject headings:
Library of Congress--Catalogs.
Vietnam--Bibliography--Catalogs.
Vietnamese imprints--Catalogs.
Princeton subject headings:
Library of Congress--Catalogs.
Vietnam--Bibliography--Catalogs.
Vietnamese imprints--Catalogs.