Columbia subject headings:
Athens (Greece)--Antiquities.
Athens (Greece)--History.
Athens (Greece)--Social life and customs.
Excavations (Archaeology)--Greece--Athens.
Pnyx (Athens, Greece)--Antiquities.
Harvard subject headings:
Pnyx (Athens, Greece)--Antiquities.
Princeton subject headings:
Athens (Greece)--Antiquities--Congresses.
Athens (Greece)--History--Congresses.
Athens (Greece)--Social life and customs--Congresses.
Excavations (Archaeology)--Greece--Athens--Congresses.
Pnyx (Athens, Greece)--Congresses.