Columbia subject headings:
Harvard subject headings:
Germany--History--21st century.
World War, 1914-1918--Causes
World War, 1914-1918--Diplomatic history
World War, 1914-1918--Germany--Historiography.
World War, 1914-1918--Germany.
Princeton subject headings:
Germany--History--21st century.
World War, 1914-1918--Causes.
World War, 1914-1918--Diplomatic history.
World War, 1914-1918--Germany--Historiography.
World War, 1914-1918--Germany.