Columbia subject headings:
Poland--Boundaries.
Poland--Foreign relations--1918-1945.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Poland.
Harvard subject headings:
Poland--Foreign relations--1918-1945
World War, 1939-1945--Diplomatic history--Sources.
World War, 1939-1945--Poland.
World War, 1939-1945--Territorial questions--Poland.
Princeton subject headings: