Columbia subject headings:
Germany. Luftwaffe--History--World War, 1939-1945.
Soviet Union. Voenno-Vozdushnye Sily--History--World War, 1939-1945.
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Aerial operations, Soviet.
Harvard subject headings:
Germany. Luftwaffe--History--World War, 1939-1945.
Soviet Union. Raboche-Krestʹi͡anskai͡a Krasnai͡a Armii͡a. Voenno-Vozdushnye Sily--History--World War, 1939-1945.
Soviet Union. Voenno-Vozdushnye Sily--History--World War, 1939-1945.
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Aerial operations, Russian.
World War, 1939-1945--Aerial operations, Soviet.
Princeton subject headings:
Germany. Luftwaffe--History--World War, 1939-1945.
Soviet Union. Voenno-Vozdushnye Sily--History--World War, 1939-1945.
World War, 1939-1945--Aerial operations, German.
World War, 1939-1945--Aerial operations, Russian.