Columbia subject headings:
Art historians--Europe--History--20th century--Congresses.
Art--Protection--Europe--History--20th century--Congresses.
World War, 1914-1918--Art and the war--Congresses.
Harvard subject headings:
Art historians--Europe--History--20th century--Congresses.
Art--Protection--Europe--History--20th century--Congresses.
World War, 1914-1918--Art and the war--Congresses.
Princeton subject headings:
Art historians--Europe--History--20th century--Congresses.
Art--Protection--Europe--History--20th century--Congresses.
World War, 1914-1918--Art and the war--Congresses.