Columbia subject headings:
Germany--Boundaries--Poland.
Poland--Boundaries--Germany.
World War, 1939-1945--Territorial questions--Germany.
World War, 1939-1945--Territorial questions--Poland.
Harvard subject headings:
Germany--Boundaries--Poland.
Poland--Boundaries--Germany
World War, 1939-1945--Territorial questions--Germany.
World War, 1939-1945--Territorial questions--Poland.
Princeton subject headings: