Columbia subject headings:
Airships--History.
Great Britain--History--George V, 1910-1936.
World War, 1914-1918--Aerial operations, German.
World War, 1914-1918--Great Britain.
Harvard subject headings:
Airships--History
Great Britain--History--George V, 1910-1936.
World War, 1914-1918--Aerial operations, German
World War, 1914-1918--Great Britain
Princeton subject headings:
Bombing, Aerial--England.
World War, 1914-1918--Aerial operations, German.
World War, 1914-1918--England.