Columbia subject headings:
Harvard subject headings:
Antiquities, Prehistoric--Europe--Congresses.
Economics, Prehistoric--Europe--Congresses.
Europe--Antiquities--Congresses.
Neolithic period--Europe--Congresses.
Prehistoric peoples--Europe--Congresses.
Princeton subject headings:
Antiquities, Prehistoric--Europe--Congresses.
Economics, Prehistoric--Europe--Congresses.
Europe--Antiquities--Congresses.
Neolithic period--Europe--Congresses.
Prehistoric peoples--Europe--Congresses.