Columbia subject headings:
Great Britain. Royal Air Force. Coastal Command--History.
World War, 1939-1945--Aerial operations, British.
Harvard subject headings:
World War, 1939-1945--Aerial operations, British.
World War, 1939-1945--Campaigns--Biscay, Bay of (France and Spain)
World War, 1939-1945--Naval operations, German.
World War, 1939-1945--Naval operations--Submarine.
Princeton subject headings:
Great Britain. Royal Air Force. Coastal Command--History.
World War, 1939-1945--Aerial operations, British.