Columbia subject headings:
Harvard subject headings:
Population transfers--Germans--Congresses.
Refugees--Germany--History--20th century--Congresses.
Refugees--Germany--Social conditions--20th century--Congresses.
Social integration--Germany--History--20th century--Congresses.
World War, 1939-1945--Refugees--Germany--Congresses.
Princeton subject headings:
Population transfers--Germans--Congresses.
Refugees--Germany--History--20th century--Congresses.
Refugees--Germany--Social conditions--20th century--Congresses.
Social integration--Germany--History--20th century--Congresses.
World War, 1939-1945--Refugees--Germany--Congresses.