Columbia subject headings:
Poland--History--Occupation, 1939-1945--Bibliography.
World War, 1939-1945--Poland--Bibliography.
Harvard subject headings:
Poland--History--Occupation, 1939-1945--Bibliography.
World War, 1939-1945--Poland--Bibliography of bibliographies.
World War, 1939-1945--Poland--Bibliography.
Princeton subject headings:
World War, 1939-1945--Poland--Bibliography.