Columbia subject headings:
Harvard subject headings:
Forced migration--Europe, Central--History--20th century--Congresses.
Forced migration--Europe, Eastern--History--20th century--Congresses.
Population transfers--History--20th century--Congresses.
World War, 1939-1945--Deportations--Congresses.
Princeton subject headings:
Forced migration--Europe, Central--History--20th century--Congresses.
Forced migration--Europe, Eastern--History--20th century--Congresses.
Population transfers--History--20th century--Congresses.
World War, 1939-1945--Deportations--Congresses.