Columbia subject headings:
Germany--Foreign relations--Poland.
Poland--Foreign relations--Germany.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Germany--Foreign relations--Poland.
Poland--Foreign relations--Germany
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Germany--Foreign relations--Poland.
Poland--Foreign relations--Germany.
World War, 1939-1945--Diplomatic history.