Columbia subject headings:
Soviet Union--Armed Forces--History--Sources.
World War, 1939-1945--Campaigns--Eastern Front--Sources.
Harvard subject headings:
Soviet Union--Armed Forces--History--Sources.
World War, 1939-1945--Campaigns--Eastern Front--Sources.
Princeton subject headings:
Soviet Union--Armed Forces--History--Sources.
World War, 1939-1945--Campaigns--Eastern Front--Sources.