Columbia subject headings:
Airplanes, Military--Great Britain.
Great Britain. Royal Flying Corps--History.
Great Britain. Royal Naval Air Service--History.
World War, 1914-1918--Great Britain--Aerial operations.
Harvard subject headings:
Airplanes, Military--Great Britain.
Great Britain. Royal Flying Corps--History.
Great Britain. Royal Naval Air Service--History.
World War, 1914-1918--Great Britain--Aerial operations.
Princeton subject headings:
Airplanes, Military--Great Britain.
Great Britain. Royal Flying Corps--History.
Great Britain. Royal Naval Air Service--History.
World War, 1914-1918--Great Britain--Aerial operations.