Columbia subject headings:
Harvard subject headings:
Europe--History, Military--20th century
Military occupation--History--20th century.
Military occupation--Social aspects.
World War, 1914-1918--Occupied territories--Social conditions.
World War, 1939-1945--Occupied territories--Social conditions.
Princeton subject headings:
Europe--History, Military--20th century.
Military occupation--History--20th century.
Military occupation--Social aspects.
World War, 1914-1918--Occupied territories--Social conditions.
World War, 1939-1945--Occupied territories--Social conditions.