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