Columbia subject headings:
Harvard subject headings:
Aeronautics, Military.
Soviet Union. Voenno-Vozdushnye Sily--History.
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Aerial operations, Soviet.
Princeton subject headings:
Soviet Union. Voenno-Vozdushnye Sily--History.
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Aerial operations, Soviet.