Columbia subject headings:
Poland--History--Occupation, 1939-1945.
Polish people--Soviet Union--History.
World War, 1939-1945--Deportations from Poland.
Harvard subject headings:
Poland--History--Occupation, 1939-1945
Polish people--Soviet Union--History
Princeton subject headings:
Poland--History--Occupation, 1939-1945.
Polish people--Soviet Union--History--20th century.