Columbia subject headings:
Harvard subject headings:
Germans--Poland--History--Congresses.
Jewish children in the Holocaust--Poland--Congresses.
Poland--History--Occupation, 1939-1945--Congresses.
World War, 1939-1945--Children--Poland--Congresses.
Princeton subject headings:
Germans--Poland--History--Congresses.
Jewish children in the Holocaust--Poland--Congresses.
Poland--History--Occupation, 1939-1945--Congresses.
World War, 1939-1945--Children--Poland--Congresses.