Columbia subject headings:
World War, 1914-1918--Causes--Congresses.
World War, 1914-1918--Congresses.
Harvard subject headings:
Military planning--Europe--History--20th century--Congresses.
World War, 1914-1918--Causes--Congresses.
World War, 1914-1918--Congresses
Princeton subject headings:
World War, 1914-1918--Causes--Congresses.
World War, 1914-1918--Congresses.