Columbia subject headings:
Harvard subject headings:
Athens (Greece)--Antiquities--Congresses.
City planning--Greece--Athens--History--To 1500--Congresses.
Excavations (Archaeology)--Greece--Athens--Congresses.
Princeton subject headings:
Athens (Greece)--Antiquities--Congresses.
City planning--Greece--Athens--History--To 1500--Congresses.
Excavations (Archaeology)--Greece--Athens--Congresses.