Columbia subject headings:
Iran--Civilization--Study and teaching--Congresses.
Iran--Study and teaching--Congresses.
Iranian philology--Study and teaching--Congresses.
Harvard subject headings:
Iran--Congresses.
Iranian philology--Congresses.
Princeton subject headings:
Iran--Antiquities--Congresses.
Iran--Civilization--Congresses.
Iran--History--Congresses.
Iran--Religion--Congresses.
Iranian languages--Congresses.
Iranian literature--History and criticism--Congresses.
Persian language--Congresses.
Persian literature--History and criticism--Congresses.