Columbia subject headings:
Acropolis (Athens, Greece)--Congresses.
Architecture, Greek--Greece--Athens--Congresses.
Architecture, Roman--Greece--Athens--Congresses.
Harvard subject headings:
Acropolis (Athens, Greece)--Congresses.
Architecture, Greek--Greece--Athens--Congresses.
Architecture, Roman--Greece--Athens--Congresses.
Athens (Greece)--Buildings, structures, etc.--Congresses.
Princeton subject headings:
Acropolis (Athens, Greece)--Congresses.
Architecture, Greek--Greece--Athens--Congresses.
Architecture, Roman--Greece--Athens--Congresses.