Columbia subject headings:
Germany. Heer. Armee, 6--History.
Germany. Luftwaffe--History--World War, 1939-1945.
Stalingrad, Battle of, Volgograd, Russia, 1942-1943.
World War, 1939-1945--Aerial operations, German.
Harvard subject headings:
Germany. Heer. Armee, 6.--History.
Germany. Luftwaffe--History--World War, 1939-1945.
Stalingrad, Battle of, Volgograd, Russia, 1942-1943.
World War, 1939-1945--Aerial operations, German.
Princeton subject headings:
Germany. Heer. Armee, 6.--History.
Germany. Luftwaffe--History--World War, 1939-1945.
Stalingrad, Battle of, Volgograd, Russia, 1942-1943.
World War, 1939-1945--Aerial operations, German.