Columbia subject headings:
Aeronautics--History.
Aeronautics--Turkey.
Harvard subject headings:
Princeton subject headings:
Aeronautics, Military--Turkey--History.
Airplanes--Turkey--History.
Okar, Avni, 1895-1962.
Turkey--History--Revolution, 1918-1923--Aerial operations.
World War, 1914-1918--Aerial operations, Turkish.