Columbia subject headings:
Iran--Description and travel.
World War, 1914-1918--Iran.
Harvard subject headings:
Iran--Description and travel.
World War, 1914-1918--Caucasus.
World War, 1914-1918--Iran
Princeton subject headings:
Iran--Description and travel.
World War, 1914-1918--Caucasus.
World War, 1914-1918--Iran.