Columbia subject headings:
Germany--Commerce.
Germany--Economic conditions.
World War, 1914-1918--Causes.
Harvard subject headings:
Germany--Commerce.
Germany--Economic conditions--1888-1918.
World War, 1914-1918--Causes
World War, 1914-1918--Economic aspects--Germany
Princeton subject headings:
Germany--Commerce.
Germany--Economic conditions.
World War, 1914-1918--Causes.