Columbia subject headings:
Archaeology, Medieval--Congresses.
Civilization, Medieval--Congresses.
Europe--Antiquities--Congresses.
Excavations (Archaeology)--Europe--Congresses.
Harvard subject headings:
Archaeology, Medieval--Congresses.
Civilization, Medieval--Congresses
Europe--Antiquities--Congresses.
Excavations (Archaeology)--Europe--Congresses
Princeton subject headings: