Columbia subject headings:
Harvard subject headings:
China--Civilization--Foreign influences--Congresses.
China--Foreign relations--Iran--Congresses.
Iran--Civilization--Foreign influences--Congresses.
Iran--Foreign relations--China--Congresses.
Princeton subject headings:
China--Civilization--Foreign influences--Congresses.
China--Foreign relations--Iran--Congresses.
Iran--Civilization--Foreign influences--Congresses.
Iran--Foreign relations--China--Congresses.