Columbia subject headings:
World War, 1939-1945--Europe, Eastern.
World War, 1939-1945--Occupied territories.
Harvard subject headings:
World War, 1939-1945--Europe, Eastern.
World War, 1939-1945--Occupied territories.
Princeton subject headings:
World War, 1939-1945--Europe, Eastern.
World War, 1939-1945--Occupied territories.