Columbia subject headings:
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Campaigns--East Asia.
World War, 1939-1945--Campaigns--Western Front.
Harvard subject headings:
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Campaigns--East Asia.
World War, 1939-1945--Campaigns--Europe.
World War, 1939-1945--Campaigns--Western Front.
Princeton subject headings:
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Campaigns--East Asia.
World War, 1939-1945--Campaigns--Europe.
World War, 1939-1945--Campaigns--Western Front.