Columbia subject headings:
Balkan Peninsula--Antiquities, Roman--Congresses.
Bruckneudorf (Austria)--Antiquities, Roman--Congresses.
Gamzigrad (Serbia)--Antiquities, Roman--Congresses.
Harvard subject headings:
Architecture, Domestic--Congresses.--Congresses.
Architecture, Roman--Congresses.--Congresses.
Balkan Peninsula--Antiquities, Roman--Congresses.
Bruckneudorf (Austria)--Antiquities, Roman--Congresses.
Gamzigrad (Serbia)--Antiquities, Roman--Congresses.
Princeton subject headings:
Architecture, Roman--Austria--Bruckneudorf--Congresses.
Architecture, Roman--Balkan Peninsula--Congresses.
Architecture, Roman--Danube River Region--Congresses.
Architecture, Roman--Serbia--Gamzigrad--Congresses.
Balkan Peninsula--Antiquities, Roman--Congresses.
Bruckneudorf (Austria)--Antiquities, Roman--Congresses.
Danube River Region--Antiquities, Roman--Congresses.
Gamzigrad (Serbia)--Antiquities, Roman--Congresses.