Columbia subject headings:
Marne, 1st Battle of the, France, 1914.
World War, 1914-1918--Campaigns--Western Front.
Harvard subject headings:
World War, 1914-1918--Campaigns--Western Front
Princeton subject headings:
Marne, 1st Battle of the, France, 1914.
World War, 1914-1918--Campaigns--Western Front.