Columbia subject headings:
Anthropology, Prehistoric--Europe--History--20th century.
Antiquities, Prehistoric--Europe--Congresses.
Archaeologists--United States--Congresses.
Europe--Antiquities--Congresses.
Paleolithic period--Europe--Congresses.
Harvard subject headings:
Anthropology, Prehistoric--Europe--History--20th century.
Antiquities, Prehistoric--Europe--Congresses.
Archaeologists--United States--Congresses.
Europe--Antiquities--Congresses.
Paleolithic period--Europe--Congresses.
Princeton subject headings:
Archaeologists--United States--Congresses.
Paleolithic period--Europe--Congresses.