Columbia subject headings:
Food supply--Germany.
World War, 1914-1918--Economic aspects--Germany.
World War, 1914-1918--Food supply--Germany.
Harvard subject headings:
World War, 1914-1918--Blockades
World War, 1914-1918--Economic aspects--Germany
World War, 1914-1918--Food supply--Germany
Princeton subject headings:
World War, 1914-1918--Economic aspects--Germany.
World War, 1914-1918--Food supply--Germany.