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