Columbia subject headings:
Poland--Foreign relations--1918-1945.
Polish question.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Poland--Foreign relations--1918-1945
Polish question.
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Poland--Foreign relations--1918-1945.
Polish question.
World War, 1939-1945--Diplomatic history.