Columbia subject headings:
Greece--Antiquities--Congresses.
Greece--Civilization--Congresses.
Greece--Religion--Congresses.
Nature worship--Greece--Congresses.
Harvard subject headings:
Greece--Antiquities--Congresses.
Greece--Civilization--Congresses.
Greece--Religion--Congresses.
Nature worship--Greece--Congresses.
Princeton subject headings:
Greece--Antiquities--Congresses.
Greece--Civilization--Congresses.
Greece--Religion--Congresses.
Nature worship--Greece--Congresses.