Columbia subject headings:
Harvard subject headings:
Britain, Battle of, Great Britain, 1940.
Great Britain. Royal Air Force. Fighter Command, Group no. 11.--History.
World War, 1939-1945--Aerial operations, British.
World War, 1939-1945--Aerial operations, German.
Princeton subject headings:
Britain, Battle of, Great Britain, 1940.
Great Britain. Royal Air Force. Fighter Command, Group no. 11--History.
World War, 1939-1945--Aerial operations, British.
World War, 1939-1945--Aerial operations, German.