Columbia subject headings:
Archives--Europe, Central--Congresses.
Archives--Europe, Eastern--Congresses.
Europe--History--1945---Congresses.
Harvard subject headings:
Archives--Europe, Central--Congresses.
Archives--Europe, Eastern--Congresses.
Europe--History--1942---Congresses.
Princeton subject headings:
Archives--Europe, Central--Congresses.
Archives--Europe, Eastern--Congresses.
Europe--History--1942---Congresses.