Columbia subject headings:
Harvard subject headings:
Forced migration--Poland--History--20th century--Congresses.
Poland--History--1945---Congresses.
World War, 1939-1945--Poland--Congresses
Princeton subject headings:
Poland--History--1945-
Poland--Social conditions--1945-
Reconstruction (1939-1951)--Poland.
World War, 1939-1945--Poland.