Columbia subject headings:
Archaeology--Austria--Congresses.
Austria--Antiquities--Congresses.
Classical antiquities--Congresses.
Harvard subject headings:
Antiquities, Prehistoric--Congresses
Archaeology, Medieval--Congresses.
Archaeology--Austria--Congresses.
Austria--Antiquities, Roman--Congresses.
Austria--Antiquities--Congresses.
Civilization, Greco-Roman--Congresses
Classical antiquities--Congresses.
Greece--Antiquities--Congresses.
Rome--Antiquities--Congresses.
Princeton subject headings:
Archaeology--Austria--Congresses.
Austria--Antiquities--Congresses.
Classical antiquities--Congresses.