Columbia subject headings:
Harvard subject headings:
Archaeology, Medieval--Congresses.
Austria--Antiquities--Congresses.
Lower Austria (Austria)--Antiquities--Congresses.
Princeton subject headings:
Archaeology--Austria--Methodology--Congresses.
Austria--Antiquities--Congresses.
Austria--History--1273-1519--Historiography--Congresses.
Austria--History--To 1273--Historiography--Congresses.