Columbia subject headings:
Harvard subject headings:
Airships--Turkey--History--20th century.
Turkey--History--Ottoman Empire, 1288-1918.
World War, 1914-1918--Aerial operations, German
World War, 1914-1918--Turkey
Princeton subject headings:
Airships--Turkey--History--20th century.
Turkey--History--Ottoman Empire, 1288-1918.
World War, 1914-1918--Aerial operations, German.
World War, 1914-1918--Turkey.